To Bloom or Not to Bloom

DC Water is marketing its EPA-certified “Exceptional Quality” Class A Biosolids as a retail soil additive called Bloom. Biosolids are merely the sludge that comes out of a wastewater treatment plant. DC Water is not the first wastewater utility or DC area utility to turn its wastewater biosolids into a soil additive for home gardeners and crops for human consumption. The question is, should we use it.

Bloom typically contains PFOA and PFOS at levels around 3.68 ppb and 15.5 ppb, respectively. Though Blue Plaines argues that levels are reportedly thousands of times lower than in food packaging and even lower than household dust, While PFOA and PFOS have been largely phased out of U.S. manufacturing for over a decade. It is true that they are still frequently found in household products and the dust they create comes from  legacy items and imported goods.

Because these are "forever chemicals," they do not break down. Items purchased years ago continue to shed PFOA and PFOS into your home environment today.  Older stain-resistant carpets are the single largest source of PFOA and PFOS in house dust. As the fibers wear down, they release micro-particles that settle on floors. Upholstered furniture treated with legacy stain-repellents continue to off-gas and shed these specific chemicals as the fabric ages. 

U.S. companies have moved to "short-chain" replacements (like GenX or PFBS), many international manufacturers still use PFOA and PFOS in their processes. Buy American. Another problem area is after-market waterproofing sprays or "stain-guard" products, especially those sold via online marketplaces from international sellers, may still utilize legacy PFAS formulas. 

Despite the phase-outs, environmental testing as of 2026 continues to show that PFOA and PFOS remain the most common PFAS found in indoor dust.  In recent studies, PFOA was detected in 97% of house dust samples, often at the highest median concentrations compared to newer replacement chemicals.  PFOA and PFOS levels in household dust have generally declined following their phase-out from U.S. manufacturing, they are still detected in nearly all homes. Modern concentrations typically range from 1 ppb to 50 ppb (parts per billion). According to the U.S. Environmental Protection Agency (EPA)  Residents who have lived in their homes longer or clean less frequently are the homes that tend to have higher accumulated levels of PFOA and PFOS in their dust. 

A recent study does demonstrate a link between PFOA and PFOS and infant mortality. The study by Baluja, R. et al. at the University of Arizona was done in 2025 and titled PFAS-contaminated drinking water harms infants, found that mothers whose drinking water came from wells downstream of PFAS-contaminated sites had a 191% higher first-year infant mortality rate.  The study highlights the danger of direct ingestion of contaminated water, which resulted in 611 additional infant deaths per 100,000 births. These sites were contaminated by industrial sources, landfills, or firefighting activities—sources often associated with much higher PFAS concentrations than typical municipal biosolids. 

Bloom meets Maryland’s most restrictive limit of 20 ppb for PFOA or PFOS, allowing for unrestricted use. Research from the University of Arizona (the same institution as the Baluja study) suggests that PFAS in municipal biosolids like Bloom does not significantly move through the soil into groundwater. Regulators consider the risks associated with Bloom soil amendment as low due to the concentrations and exposure pathways involved. 

Using a biosolid like Bloom does create a localized exposure point for chemicals that the federal government is otherwise trying to eliminate from the consumer cycle. The FDA's recent action eliminates what was once a "primary source of dietary exposure" (e.g., fast-food wrappers, microwave popcorn bags). By using biosolids, you are essentially importing these legacy chemicals back into your immediate living environment.

PFOA and PFOS are "forever chemicals" that do not break down. Once added to your garden, they remain in the soil and can be taken up by leafy greens and fruit vegetables, which research shows have higher bioaccumulation rates compared to root vegetables.

Also, children playing in gardens are at higher risk of "incidental ingestion" of soil and dust. While the concentrations in Bloom are low, they represent an avoidable addition of toxins that are no longer present in your take-out containers, non-stick cooking pans, new furniture and carpeting. The risks specifically associated with Bloom soil amendment are generally considered low due to the concentrations and exposure pathways involved, but we are trying to eliminate these specific chemicals from our homes and bodies. I see no reason to add extremely low concentrations to my life.  

If we look at the numbers we've discussed for PFOA in  Bloom is about ~3.68 ppb (ppb) and in average household dust is around ~8.6 ppb (ppb). This means, based on median samples, household dust can actually have a higher concentration of PFOA than the Bloom soil amendment. However, a child playing in a garden might ingest or inhale far more dirt/dust than they would from a clean indoor floor. In this I am very risk adverse.  

DC Water hosted a very informative Webinar last year that you might want to watch to help you make the decision that is right for you. 

 

The Kline Property, Again

The Kline Farm property encompasses a bit more than 86 acres and is generally located south and southeast of the intersection of Prince William Parkway and Liberia Avenue, and north of Buckhall Road. The property is located in a transitional area of the county that is adjacent to the City of Manassas. Stanley Martin has come forward with yet another proposal for the development of the site that is going to the Planning Commission on Wednesday. 

I will leave the description of the newest plan to others and concern myself with the issue I care most about, water. Residents of the abutting Hynson Knolls community, homeowners bordering Buckhall Road and homes along Lake Jackson Drive rely on private wells for water. Stanley Martin Homes has proffered to engage an environmental professional to perform a well yield and limited water quality test on any lawfully operating household water supply well for residential property located within 800 feet from the Kline property line to establish a baseline for the closest wells. Those well owners may request a re-evaluation of their well if a negative impact is suspected six month after the substantial completion of the site grading. Not good enough.

Private wells draw their water from groundwater. Geology, climate, weather, land use and many other factors determine the quality and quantity of the groundwater available. Within Prince William County Virginia there are four distinct geologic provinces: (1) the Blue Ridge, (2) the Culpeper Basin, (3) the Piedmont, and (4) the Coastal Plain. The U.S. Geological Survey divides the four geologic provinces of the county into seven hydrogeologic groups based on the presence and movement of the ground water calling them groups: A, B, B1, C, D, E and F. Almost 30 years ago the U.S. Geological Survey studied the groundwater systems within Prince William County. You can review that report if you wish to see the entirety it is by Nelms and Brokman.

Previously, consultants hired by Stanley Martin Homes identify the site as located within Hydrogeological Group E. The Kline Farm and vicinity are within a fractured bedrock aquifer in which groundwater availability and flow are controlled by fractures and joints within the rock. Hydrogeologic group E consists of metasedimentary, meta-volcanic, and other metamorphic rocks. Rocks within hydrogeologic group E tend to have poor to moderate water-bearing potential, and thin- to thick cover of overburden. Ground-water storage tends to be predominantly in the overburden which is typically relatively granular and porous. This is a water table aquifer separate from but hydraulically connected to the underlying bedrock aquifer. According to that USGS report by Nelms and Brockman, some of the poorest yielding wells are located in hydrogeologic group E. Because of the local geology care should be taken to ensure that the existing homes are not impacted by the development.

The fracture trace analysis performed by Stanley Martin Homes’ consultant (using 1978 data) found a predominant west-northwest to east-southeast regional fracture orientation; however, there was a notable but less prominent southwest to northeast regional fracture orientation also present. The groundwater flow in Prince William county is generally to the east-southeast, but there is considerable variation and surprises in the flow as documented by monitoring at several cleanup sites in the county and suggested by the fracture analysis.

Wells within a quarter of a mile of construction are at the highest risk for reduced water volume. However, excavation and blasting can open fractures in the bedrock and change groundwater flow. Groundborne vibrations from heavy equipment in loose, sandy soils, vibrations as low as 0.1 in/sec can cause "dynamic settlement" (soil compaction) at greater distances, potentially leading to well casing failure or loss of water in the overburden.

While direct sediment influx often happens due to runoff from the construction site, changes in groundwater flow paths from excavation or blasting can redirect contaminants toward a well from a "significant distance" away. Also, blasting can fracture the bedrock, which might cause a structural collapse in unstable geological zones.

Development of the site can impact groundwater recharge and well yield over the long term. Grading and the clearing of the land increase surface runoff and reduce the amount of water that can soak into the ground, which over a number of years (or decades) may deplete groundwater. Cutting into the earth for foundations can intersect and redirect the groundwater flow that had historically fed the wells.

Vibrations can shake loose rock particles or sediment within the well, leading to "turbid" (cloudy) or brown water in the short term. In addition, runoff from grading sites often contains fuel, oil, or cement, which can infiltrate the groundwater supply. Heavy grading and machinery permanently compact the soil, reducing its natural ability to absorb and filter precipitation even in areas that remain unpaved.

Suburban/ urban development introduces "chemical cocktails" into the groundwater, including road salts (chlorides), heavy metals from automobiles, and nutrients from lawn fertilizers. The installation of utility lines, and underground water and sewer infrastructure can create zones of high permeability- a pathway of least resistance if you will- allowing contaminants to travel much faster and further through the soil than they naturally would.

The proffer Stanley Martin is offering to effectively the first line of homes may not include enough area to ensure no impact. The U.S. EPA standard for determining impact is a greater radius and begins at a quarter of a mile, is 2.0 miles for class II groundwater under the EPA’s Groundwater Protection Strategy under RCRA, and is 4 miles for CERCLA. At a minimum defaults to 1/4 acre in most circumstances. The scope to testing should be defined and include all primary and secondary contaminants regulated under the Safe Drinking Water Act, The static water level, and the water well yield test. (Make sure they are not testing the pump yield.).

Finally, depletion of groundwater can be a very slow but real process takes years before homeowners notice impact to their wells. Large-scale projects need to install "sentinel wells" at a minimum at the corners of the project to monitor groundwater levels during and after construction. These wells should meet the U.S. Geological Survey standards for groundwater monitoring wells and be turned over to the USGS to be incorporated into their monitoring network. Appropriate financial arrangements should be made with the USGS.

Water Bankruptcy in Corpus Christi

Corpus Christi is facing water bankruptcy. Without significant rainfall (30 inches this summer), Corpus Christi is headed for a “water emergency” by fall and will reach a point next year where city supply can no longer meet demand. Corpus Christi with reach  "Day Zero” the specific day a city's municipal water supply is projected to run out . On this day, authorities must shut off taps to homes and businesses, leaving residents to collect a limited daily water ration. Though, Corpus Christi actually has no operational ability to do this.

Residents have been living under Stage 3 water restrictions since December 2024. These restrictions ban lawn watering and limit most outdoor water use to specific days and hours. City officials have warned that a formal water emergency could be declared later this year. This emergency stage would require mandatory reductions not only for residents, but also for major industrial and commercial water users.

from City of Corpus Christi

A NASA analysis released in January showed satellite images comparing October 2021 to October 2025 highlighting the shrinkage in both Choke Canyon Reservoir and Lake Corpus Christi, the two primary water sources for more than half a million residents across the Coastal Bend.

from NASA

According to NASA, Choke Canyon Reservoir dropped from 47 % capacity in 2021 to just 11% in 2025. Lake Corpus Christi fell from 87% to 14% over the same period. Combined storage fell to 10 % as of January 20, 2026. As of March 13^th, 2026, the combined storage levels of Choke Canyon Reservoir and Lake Corpus Christi are at 8.7% according to the City of Corpus Christi water dashboard.

City officials also noted that portions of that remaining water may not be fully usable due to sediment accumulation and arsenic that can damage filtration and treatment systems. A regional drought that has slowly intensified over several years has contributed to the problem, but according to an article published in Inside Climate News, two large industrial users in recent years have drained the reservoirs.

Exxon’s plastic plant started operations in 2022 and consumes 25 million gallons of water per day. This water use was approved despite the region’s water plan projecting that the region would exceed water supply.  Corpus Christi then approved another 6 million gallons of water a day to Steel Dynamics, which then built a steel mill in the area and came online a few years ago.

There really was not enough water, but Corpus Christi had been discussing desalination for years. In 2016 many local politicians and staff traveled to Israel where they toured the world’s largest seawater desalination plant and met with Israeli officials to discuss desalination.

Later that year, an industry group hosted an event in Corpus Christi. They proposed desalination plant they would produce 10 million gallons per day, cost $140 million and take two years to build, the presentation said. It would begin supplying water by the start of 2023. The Corpus Christi City Council was on board, but only preliminary proposals were produced. By 2020 the size of the proposed plant had doubled.  In the beginning of 2024, Corpus Christi City Council produced a new cost estimate the proposed desalination plant of about $550 million to produce 30 million gallons of freshwater per day. A subsequent cost estimate put the project at nearly $760 million. Then in July 2025 the cost estimate was raised to $1.2 billion and still no plans or drawings were generated. Two months later, Corpus Christi City Council voted to cancel the project . For more details read the excellent Inside Climate New article and the City of Corpus Christi water news.

Meanwhile, the City of Corpus Christi under threat from Governor Abbott to take over their water operations has rolled out a series of long-term measures, including the development of wells, the purchase of groundwater rights, and evaluations of future desalination capacity. None of which seem likely to meet demand in time.

Following the Inside Climate News article publication, Corpus Christi officials denied immediate "Day Zero" scenarios.  The situation, driven by a 4 year-long drought and high industrial demand, has prompted new modeling efforts that are suggesting that indeed critical, low-level water conditions could emerge this year. There simply is not enough water.

Corpus Christi is bracing itself for a level one water emergency where the city’s plans call for an immediate 25% curtailment of water consumption. The city has not yet determined how they would implement it. Also, Climate News reported that the region’s largest industrial users, which collectively consume most of the the region’s water, remain exempt from emergency curtailment. The city denies that the industrial users are exempt, but that remains to be clarified. These multi-billion-dollar refineries, petrochemical plants and liquified natural gas facilities are designed to run at a steady rate and can’t simply throttle down production in accordance with water availability. Water is consumed primarily in cooling towers to prevent excessive heating and explosions. Not really something you want to throttle back.

There is No Resilience for Private Wells

There are over 50,000 residents of Prince William County who depend entirely on groundwater for their water supply. In all it's planning and spending the Prince William County government has entirely ignored their needs and right and interest. Sustainability of groundwater supply is not understood or considered in any decision of the Planning Department or the Board of County Supervisors. They are stealing our water and our future and ignoring our rights and needs. 

The "public" groundwater systems managed by Prince William Water is the Evergreen & Bull Run Mountain System . This system serves approximately 2,000 residents and lacks redundancy. As the local water table slowly drops due to the "delayed debt" of 1990s development, the entire neighborhood faces simultaneous shortage.  

Prince William Water has spent millions on the Bull Run Mountain Well Upgrades to drill deeper and interconnect these systems. This is an engineering attempt to buy "robustness" because the natural "adaptability" of the aquifer has been stripped away by increasing deforestation, development and use.

There is other groundwater use that is essential to the county. There are  an estimated 16,000 Private Wells (serving about 50,000 residents) in the county.  These are individual wells owned by homeowners, primarily in the former Rural Crescent and mid county areas.

• Scale of Problem: These represent 16,000 individual points of failure.
• The Resilience Crisis: These residents have zero federal or county safety net. As the loss of tree cover and increasing impervious cover prevents recharge groundwater, the water level in private wells will slowly drop and depending on geology may go dry. Once a private well fails, the "rapidity" of recovery is non-existent. The homeowner bears the full cost (often $15,000–$30,000) to drill deeper. With a even higher cost to connect of public water supply if feasible. There are large areas of the county where there is no easy access to water mains.
• The Data Gap: There are only two groundwater monitoring wells in the county and only one of them is a relevant monitoring well (49V) for this entire region, these 16,000 homeowners are "flying blind." They are the first to feel the "savings account" hitting zero, but they are the last to be reflected in county infrastructure planning.
• The county has failed to track the incidence of well failure, or permits to drill deeper. They remain willfully ignorant of the condition of the water supply for 50,000 residents. 

Groundwater is not only the source of drinking water for all private and public wells, it is  also the savings account for all rivers and streams. The county's rivers and streams feed the Occoquan Reservoir.  Maintaining natural open areas provides groundwater recharge. Increasing impervious cover levels increases stormwater runoff and reduces groundwater recharge. The groundwater is essential as the base flow to the streams and rivers that feed the Occoquan Reservoir during the dry months and serves as free water storage. As the private wells begin to respond to development the rivers and streams will become seasonal an then ephemeral. 

Groundwater is the moisture and water that exists in the spaces between rocks, the pores in the soil and fractures in the geology-the invisible portion of the water cycle. Groundwater is renewed through precipitation infiltrating into the ground. Though there is a seasonal aspect to rainfall, it can be extracted year-round provided that there is adequate replenishment. Groundwater can be extracted indefinitely and can be robust in the face of drought. However, groundwater is not unlimited.

Increase the amount of groundwater extracted beyond what is replenished, then slowly over time the aquifer is used up, the water level falls and wells go dry. Reduce groundwater recharge by eliminating forested areas and replacing them with compacted soils (lawns that need to be watered), pavement, buildings and over time the aquifer will become exhausted.

We do know that groundwater availability varies by location even within Prince William County (Nelms and Richardson, 1990) . Precipitation and soil type determines how much the shallower groundwater is recharged annually. The water level in a groundwater well usually fluctuates naturally during the year, but as seen in the chart above, it has been very slowly decreasing. Groundwater levels tend to be highest in the early spring in response to winter snow melt and spring rainfall when the groundwater is recharged. Groundwater levels begin to fall in May and typically continue to decline during summer as plants and trees use the available shallow groundwater to grow and streamflow draws water.

However, groundwater levels can be affected by development. Land use changes that increases impervious cover from roads, pavement and buildings does two things. It reduces the open area for rain and snow to seep into the ground and percolate into the groundwater and the impervious surfaces cause stormwater velocity to increase preventing water from having enough time to percolate into the earth, increasing storm flooding and preventing recharge of groundwater from occurring. Slowly, over time, this can reduce groundwater supply and the water table falls.

Changes begin to take place in a watershed in response to development almost immediately, but the true impact is seen in the long-term as groundwater is drawn down and not recharged fully. Very slowly, the groundwater level begins to decrease. This These ecological and physical changes emerge over 20 to 50 years. Replacing 35–50% of a forested area with impervious surfaces permanently alters how water moves through the landscape causing profound hydrological and ecological shifts that take years to be seen.

It has been over twenty years since the last big building boom in the county. What changes we are seeing (formerly perennial streams drying out in the summer, water levels falling in the Evergreen Bull Run system) are the cumulative changes from building during the 1990’s -2007. That impact will be followed by the impact from the current building boom.

Challenges to Water Resilience in Prince William County

 

Changes to the comprehensive plan, the increased rate of construction, changing climate and land use conspire to undermine the resiliency of our water system in Prince William County and the greater Washington DC metropolitan area.

Global Water Bankruptcy: A Warning

In January 2026, the United Nations University's Institute for Water, Environment and Health (UNU-INWEH) released its "Global Water Bankruptcy" report. The report warns that certain regions have moved past temporary water stress and entered irreversible water bankruptcy, meaning a permanent inability to return to former water levels the exact opposite to water resiliency. Humanity is depleting its water savings—groundwater, lakes, ecosystems, and glaciers—but can no longer rely solely on annual precipitation to supply its communities. Are we in the Washington Metropolitan Area headed for the same fate?

First What is a Resilient Water Supply

In general, a resilient water supply is the ability of a water system—including its infrastructure, management, and natural source water—to withstand, adapt to, and quickly recover from shocks and stresses. Sustainability a related concept focuses on meeting current needs without compromising future generations, "resilience" specifically targets the capability to handle disruptions like the recent big freeze, droughts and intense storms. 

Core Dimensions of Water Resilience

The key pillars of water Resilience:

• Robustness: The physical strength of the system to resist damage. This is the "hardened" infrastructure like pipes and pumps that resist soil shifts and weather related breaks and treatment plants that can operate during extreme weather conditions and floods.
• Redundancy: Having "spare capacity" or back-up systems. For example, if a primary river source is contaminated, a resilient system can instantly pivot to stored reservoir water or secondary interconnections with a neighboring utility. The Potomac River supplies most of the drinking water supply in this region. If there is a spill, Fairfax Water can turn to the Occoquan Reservoir, but a long duration need, like a severe drought might not be able to be met.
• Adaptability: The capacity of the organization to adjust operations as conditions change. This involves using real-time data to manage demand or modifying treatment processes to handle new contaminants.
• Rapidity: The speed at which a system returns to normal service after a failure, often supported by mutual aid agreements and emergency power sources.

 Typical Shocks and Stresses

A resilient system is designed to navigate both sudden "shocks" and long-term "stresses": 

• Sudden Shocks: Hurricanes, earthquakes, cyberattacks, chemical spills, intense cold snaps, and the sudden main breaks which are associated with sudden cold snaps. The resilience of our neighbors at WSSC and DC Water during the recent big freeze was lacking.
• Chronic Stresses: Prolonged droughts, aging infrastructure, rapid population or demand growth, and shifting climate patterns. 

The Role of Natural Infrastructure

Modern definitions of resilience increasingly include Ecological Resilience. This refers to the ability of watersheds, wetlands, and forests to naturally filter pollutants and slow down stormwater runoff, protecting the "built" infrastructure from being overwhelmed during extreme weather which is increasing. 

Prince William County maintains a modestly resilient water system through a combination of diverse water sourcing, regional interconnections, and significant infrastructure investments managed primarily by Prince William Water. However, about 10% of the population are not customer of PW Water.

1. Diversified Water Sources 

The county utilizes four distinct sources to ensure a steady supply: 

• Potomac River: Primary source for the western part of the county treated by Fairfax Water at their Corbalis Plant.
• Occoquan Reservoir: This is a sole source for the eastern part of the county. PW Water is completing a project to build a second connector to the Griffith Plant.
• Lake Manassas: Supplements the western part of the county with water treated by City of Manassas Water and could provide supply for a period of time if the connector to the Corbalis water treatment plant was disrupted.
• Groundwater Wells: Six public wells serve the Bull Run Mountain and Evergreen system. This is a single source community dependent on groundwater wells in a small geographic location. 

Source Water resilience

Let’s go back and look at what has been happening in Prince William County to impact the availability of water and water resilience.

In Prince William County  the conversion of open and forested lands into developed surfaces poses several direct threats to water resilience and sustainability, including increased pollutant runoff and degraded groundwater recharge.

Primary Threats from Land Use Change

• Increasing Impervious Surface prevents rainwater from soaking into the ground. And increasing stormwater runoff and flash flooding .
• Increased Pollutant Loading without natural filtering sediment, nitrogen, phosphorus, and heavy metals flow directly into rivers and the Occoquan.
• Reducing groundwater recharge and the availability of groundwater. 

Fairfax Water recommended that the Prince William Board of Supervisors strengthen riparian buffer protections by establishing an Environmental Resource Overlay District, requiring a 50-foot buffer of woodland for non-Resource Protection Area streams. For industrial development, they advised mandating 200-foot buffers, retaining existing forested areas instead of replanting, and utilizing permanent protective easements. Fairfax Water also called for prohibiting the discharge of high-salinity "blowdown" water into the system. 

In December 2022, the Prince William Board of County Supervisors approved the "Pathway to 2040" Comprehensive Plan, which resulted in the Removal of Sewer and Density Restrictions, allowing for more widespread development infrastructure and higher density.  New Land Use Designations effectively "upzones" sensitive areas.

Though they Occoquan Reservoir Protection Area (ORPA), but recent BOCS decisions have upzoned several areas of open land justifying the decision with the new existence of marvelously magical building techniques.

Industrial and Data Center Expansion including the Digital Gateway and a new industrial area along Route 28 near the Fauquier County line, further converting open land to intensive use. 

Emerging Water Supply Strains

New research from the Interstate Commission on the Potomac River Basin (ICPRB) highlights that changing weather patterns and increased water demand from data centers are straining the region’s water supply.

The 2025 Washington Metropolitan Area Water Supply Study - Demand and Resource Availability Forecast for the Year 2050 finds that while the region will generally have ample water, the risk of shortages is increasing—from about 1 percent in 2030 to 5 percent in 2050 even accounting for all  planned water storage increases in the period. Loss of groundwater is not factored into their model. ICPRB forecasts a 17% increase in water use by 2050, from 465 million gallons per day (MGD) to about 538 MGD.

Climate Change and Water Demand

Increasing water demand and predicted changes in temperature and precipitation—characterized as “hot drought”—may threaten river flow. Rising temperatures decrease river flows through higher evaporation, while increased precipitation could raise flows. The interplay between these factors, land use change reducing groundwater recharge combined with higher demand, puts the source water system at higher risk.

Water Supply Sources and Risks

While most regions have multiple water sources, the Potomac River is the sole drinking water source for Washington D.C. and Arlington County. Fairfax Water uses the Potomac River and the Occoquan Reservoir. Upstream reservoirs (Jennings Randolph and Little Seneca) can supplement Potomac River flow. However, the study found that, in extreme droughts, upstream reservoirs could run dry as early as 2030 in four out of nine scenarios, suggesting a need for additional storage.

 

Iran-Will Water Decide the War

In the Middle East Iran is uniquely blessed with a relative abundance of natural water. The Persian Empire thrived due to the abundance of water. Currently, Iran’s annually renewable water resources are estimated at approximately 80 to 110 billion cubic meters (BCM) depending on whether you ask government sources or hydrologists. Long-term averages and internal estimates vary due to the severe and extended current drought, politics and climatic shifts. Renewable resources were 140 BCM in 1999 and have fallen to current levels, a decline of around 30%  in 25 years. 

According to a recent U.N. report, Iran is experiencing "water bankruptcy," a state where societal water demand permanently exceeds sustainable supply. While the average national renewable resource is approximately 89–110 billion cubic meters (BCM) at best, withdrawals frequently exceed the water supply total, leading to the collapse of regional ecosystems. As discussed in an earlier post, approximately 97% of Iran is experiencing severe drought. Over-extraction of groundwater has led to "aquifer death" and land subsidence in major cities. 

Water scarcity is has been fueling local tensions and protests, which could escalate into broader social conflict, especially as the current war is added to rising inflation, unemployment, housing issues, and the high cost of living further erode people’s capacity to cope with yet one more crisis. The protests of early winter met with government crackdowns and reportedly over thirty-thousand  Iranians were killed by their government in recent protests. In addition, over 53,000 people have been arbitrarily detained. 

The "loss" of nearly 30% of Iran's renewable water over the last quarter century is driven by increased evapotranspiration and the reduction in mountain snow pack; and cross border conflicts with Turkey and Afghistan caused by damming the rivers. This past fall Iran had to resort to water rationing (though sometimes indirect by cutting off supply).

Saudi Arabia and Iran represent opposite ends of the spectrum in water management. Saudi Arabia leads the world in desalination capacity and investment in water infrastructure while Iran faces a water crisis that threatens their very existence due to systemic underfunding and mismanagement. Recent official Saudi Arabia data and industry reports indicate that Saudi Arabia’s  installed desalinization capacity has exceeded 9 million m³/day. This is a result of a long term strategic plan involving over $80 billion in investment in water.

While Saudi Arabia has "solved" its scarcity through technology, it faces a security risk: a successful strike on the Jubail desalination plant could trigger a humanitarian crisis in Riyadh within one week. Conversely, Iran's crisis is systemic and environmental, driven by the irreversible depletion of its ancient groundwater reserves and destruction of its ecology while not maintaining or improving their water infrastructure.

The Gulf Cooperation Council states are uniquely exposed to Iran's attacks because they rely on desalination for 70% to 90% of their drinking water. Analysts of the region believe Tehran is targeting these "soft" civilian targets to raise the humanitarian and economic costs for Arab states. Unconfirmed reports from the Economist suggest Iran has also targeted a major desalination plant in Israel which serves as a backbone for the nation’s potable water supply. Beyond water, Iran has successfully halted a fifth of the global LNG (liquified natural gas) supply by striking Qatar’s Ras Laffan energy facility. 

Iran has long threatened to retaliate against any attack with an attack on a  wide range of regional and international targets . They have followed through with that. Following  the U.S. and Israeli strikes on February 28, Iran launched missile and drone attacks on industrial areas, ports, water and power infrastructure and tankers in Saudi Arabia, the UAE (including Dubai and Abu Dhabi), Bahrain, and Qatar.

Iran has taken the fight to the next level.  Iran has implemented it’s "Decentralized Mosaic Defense." This strategy uses dispersed, mobile missile launchers and clandestine drone sites to continue to keep their dispersed units and terrorist cells fighting. However, the ability to maintain  control of the population or have a unified strategy could be impaired. Operating a critically failing water system may be beyond the thought or reach of the Mosaic Strategy. 

Tehran's reservoirs are at somewhere around 10% capacity. The Mosaic Defense's focus on "prolonging conflict" and "attrition" will divert the resources needed for urgent water infrastructure repairs. This is likely to accelerate the collapse of complex public services rather than maintaining them. Loss of water might change the balance of power in Iran.

Proactively Replace Heat Pump or Wait for Failure

In late January 2026, Virginia experienced an unusually severe storm. The region was hit by heavy snow, followed by sleet and freezing rain, and then a prolonged deep freeze. This rare combination formed a rock-hard, ice-bonded layer officials called "snowcrete," which behaved much like solid ice or concrete. Only recently has that icy mess melted away.

Personal Experiences During the Storm

Two noteworthy events occurred during the storm. First, I welcomed a local stray cat into my garage. By placing the old cat’s RSID tag on her collar, I taught her how to use the cat door. She quickly adapted, and by the time the storm arrived, she was settled with a heated bed, food, and water. Her presence was a pleasant distraction during the days spent snowed in.

Second, several neighbors experienced heat pump failures, and one dealt with a burst water pipe. These incidents made me consider whether I should proactively replace my 2012 heat pump, even though it is still operational, rather than risk an emergency replacement during extreme weather. For the past week, I have weighed the pros and cons of replacing my Carrier Infinity system in spring 2026.

Considerations for Replacement

Under the American Innovation and Manufacturing (AIM) Act of 2020, the HVAC industry is transitioning away from high Global Warming Potential (GWP) hydrofluorocarbons like R-410A in my existing system, moving toward more eco-friendly refrigerants. Signed into law in 2020 by President Trump during his first administration, the AIM Act remains in effect unless repealed by Congress, and despite some proposed deadline delays, the shift is ongoing. In 2026, the industry standard is the adoption of A2L refrigerants like R-454B or R-32, which are slightly "flammable."

Safety and Flammability of R-454B

R-454B is classified as A2L (mildly flammable), meaning it is difficult to ignite and has a very low burning velocity. Ignition requires a high concentration and a consistent, open flame, making it less risky than propane tanks or gas stoves, though it is more hazardous than previous refrigerants.

Modern heat pumps now feature a Refrigerant Detection System (RDS). If a leak occurs, the system automatically activates the blower fan to disperse the gas, preventing it from reaching flammable concentrations, and then shuts down. In the rare event of a fire, R-454B tends to burn slowly and often self-extinguishes.

Newer heat pump units have more complex electronics and controllers, increasing the potential for component failures. Therefore, a comprehensive parts and labor warranty from a reliable manufacturer is essential; though I have never bought an extend warranty before. Transitioning to a new system means moving away from a known entity into something less familiar.

My 2012 heat pump has reached its statistical life expectancy. By upgrading now, I can avoid an emergency replacement where inventory may be limited, or I might have to endure days without heating or cooling during extreme weather. In 2012, I spent several weeks without air conditioning upstairs during a heat wave.

Pros of Proactive Replacement

Pros of Proactive Replacement

1. Avoid Emergency Stress and Costs: The primary benefit is complete control over the process. You can research models, get multiple quotes, schedule the installation at your convenience, and avoid the panic, limited choices, and premium pricing of an emergency summer failure replacement.
2. Future-Proofing with New Technology:

• Regulatory Compliance: I would transition from a soon-to-be "legacy" R-410A system to a modern R-454B system that complies with all 2026 EPA regulations, ensuring easy servicing and affordable refrigerant supply for the next 15+ years.

• Superior Efficiency: My 2012 unit was 19 SEER under the old testing standards. New models (like the 23 SEER2 Carrier Infinity models I am considering) are rated under “real life conditions” and utilize improved thermodynamics and variable-speed technology, likely reducing your operating costs by close to 10%.

3. Better Warranty Coverage: New equipment comes with full manufacturer warranties on parts and compressors for 10 years and lets be honest systems tend to be problem free in the first 8 years or so. My 2012 system is past its original warranty, and the pump is not operating as efficiently as it once was. Also, because of all the electronics, factory distributors are offering 10 year labor warranties at what appears to be at reasonable prices given the cost to install a major component or add refrigerant.
4. Access to Financial Incentives: New, high-efficiency heat pumps often qualify for substantial federal tax credits (potentially up to $2,000 via the Inflation Reduction Act) and local utility rebates, however, none of those incentives are available to me.

Cons of Proactive Replacement

1. Upfront Financial Cost: The main drawback is the immediate expense of a new premium system—a significant investment that might not be necessary for another year or two if the current unit continues to function.
2. "Wasted Life" Concern: Replacing the current heat pump early means not maximizing every hour of usage from the original investment, as it still has some useful life remaining.
3. Potential for New System "Bugs": While A2L technology has been thoroughly tested, any new installation carries a small risk of initial issues or manufacturing defects, which can be inconvenient. Additionally, the increased complexity of controllers complicates the systems further making failure of a controller a consideration.
4. Learning Curve: The new smart Infinity controls and A2L safety features require a slight learning curve for both the user and the installer. It is important to ensure the installer is a factory-authorized dealer with experience installing these units.

Conclusion

The bottom line is I’m old and not going to get any younger. Making this as easy as possible is valuable to me. Replacing a heat pump is always highly inconvenient and will require repair and repainting of the ceiling in my closet because the attic stairs have to be removed to fit the unit through to the attic where the air handler goes. In addition, the new electronic thermostat and control is not the same size as the old one and will require the repair and repainting of that wall. So, this will be a big dusty mess, a call to the handy man for repair and painting. This is never going to get easier. Nonetheless, I have come to the conclusion that seeking peace of mind and long-term efficiency gains, the pros of avoiding an emergency replacement in the peak of summer typically outweigh the cons of replacing a perfectly functional (but aging) unit. So, I’ll get a couple of bids and move forward with replacement this spring.

Well Water Testing Clinic

 

Public water supplies are tested daily for contaminants.  Private wells are tested when you do it, and you should do it every year. Prince William County Extension will be having a test your well water clinic in March 2026.  Sign up now online : tinyurl.com/VAHWQP-PW

Water samples will be tested for 28 chemical and bacteriological constituents including: iron, manganese, nitrate, lead, arsenic, fluoride, sulfate, pH, total dissolved solids, hardness, sodium, copper, total coliform bacteria and E. Coli bacteria. Sample kits will be $70  this year. Registration and pre-payment must be online by going to https://tinyurl.com/VCE-PW-VAHWQP before March 16th 2026. I had no trouble following the link and prepaying. Be aware they will send a receipt and confirmation of registration from the VCEPrograms  and a payment receipt from the Bursar at VA Tech.

You have to go pickup your sample kit before the sampling date and take the sample according to the directions provided on the morning you will be dropping it off at the Extension office. Instructions on how to collect the sample are also availableon-line

• Watch a video on how to collect your sample on YouTube
• Read instructions on how to collect your sample online

1. Pick up your Testing Kit Materials at any of the options below:        

March 16-31, 2026 8 AM -3 PM at the VCE-Prince William Office; 8033 Ashton Ave, Manassas, VA 20109

The Plaza, 1 County Complex Ct, Woodbridge, VA 22192 : Saturday, March 21st 2026 9:00am - 11:00am.

Prince William Library in Haymarket/Gainesville; 14870 Lightner Road, Haymarket, VA 20169 Monday, March 23, 2026 5:30-7:30 PM

2. The Sample Drop Off: Wednesday, April 1, 2026 from 6:00am - 10:00am ONLY at the VCE-PW Office, 8033 Ashton Ave., Suite 105, Manassas 20109.

3. Results will be sent to you by email and there will be an Interpretation Meeting  both in person and through (Zoom)  on May 12, 2026 6:30PM-7:30PM  5 County Court, County Center, VA 22192. Zoom link and details will be emailed to all registrants.

The number of kits is limited. Pre-payment online is the only way to pay and guarantee you will get a kit. You must pay and register in advance. No refunds will be available. Household water quality is driven by geology, well construction and condition, nearby sources of groundwater contamination, and any water treatment devices and the condition and materials of construction of the household plumbing.

To ensure safe drinking water it is important to maintain your well, test it regularly and understand your system and geology. If you have water treatment equipment in your home you might want to get two test kits to test the water before and after the treatment equipment to make sure you have the right equipment for your water and that it is working properly. All participant information is kept strictly confidential

The chart below shows what was found in the  private wells tested test of testing  in Prince William County in 2025.

 

Potomac Interceptor -Federal Aid Granted

from DC Water

When I heard that Mayor Muriel Bowser was seeking 100% federal reimbursement for the estimated $20 million in immediate emergency response costs for the Potomac Inceptor collapse, I misunderstood what the Mayor was asking for. Mayor Bowser was only seeking federal aid for the environmental cleanup. Though originally refused, the federal government granted aid on February 20, 2026, to help mitigate the disaster. I had no idea what the total cost of the project will exceed $600 million.

So, let’s back up. the January 19, 2026, collapse of the Potomac Interceptor was a result of structural failure in a 60-year-old sewer line that DC Water (the local water utility) had already identified for rehabilitation prior to the incident. While the exact cause remains under investigation, the section was part of a planned 10-year rehabilitation project that began in January of 2025 with the initial geological testing for its replacement. Unfortunately, the infrastructure did not last as long as DC Water hoped.

Regarding the financial responsibility and maintenance history:

• Federal Funding Request: Mayor Muriel Bowser has requested a Presidential Emergency Disaster Declaration seeking the federal government to reimburse Washington DC for the estimated $20 million in immediate emergency response costs. The federal government granted this aid on February 20, 2026, to help mitigate the disaster.
• Maintenance History: DC Water manages infrastructure dating back to the 1800s. For decades their replacement cycle has been between 100 and 300 years on infrastructure. This replacement cycle is longer than the expected life of the infrastructure, so it guarantees that there will be failures. The current Capital Improvement Plan contained plans for the rehabilitation of the Potomac Inceptor. According to that plan long-term repairs and system-wide upgrades for the Potomac Interceptor will cost between $600 million and $625 million.
• Regional Responsibility: The Potomac Interceptor is funded through an Intermunicipal Agreement (IMA), between WSSC and Fairfax Water (which contribute over 50% of the wastewater flow) are also contractually responsible for that portion of its maintenance and repair costs. DC Water remains responsible for the management of the system.

DC Water now projects that the Short-Term Timeline (Emergency Response) to the Potomac Interceptor collapse. By mid-March 2026 DC Water expects to complete the emergency repair of the collapsed section. This will restore full pipe function and allow the temporary bypass system in the C&O Canal to be removed. Crews are currently removing the collapsed rock and debris from the pipe. Once the obstruction is cleared, the 72-inch pipe will be permanently patched. 

Environmental Restoration

A comprehensive plan for cleaning up the sewage-impacted areas and restoring the C&O Canal is currently being developed with federal and state regulators and is expected to be released for public review and comment after the pipe is stabilized. 

from DC Water

Long-Term Rehabilitation Timeline

Following the emergency fix, DC Water will accelerate its broader rehabilitation plan for the remaining sections of the interceptor as follows: 

• Accelerated Phase (March – December 2026): Work that was originally scheduled for 2027 will now be moved forward to 2026 since the pipe is already exposed. This phase involves  inserting a new pipe inside the old pipe- slip lining over roughly 2,700 linear feet of the system.
• Regional Completion (Spring 2026 – 2028): The full system-wide upgrade for the 60-year-old infrastructure is a multi-year effort projected to continue through late 2027 and into 2028.

Before 2009 when George Hawkins, became the General Manager of DC Water (formerly DC WASA), the utility replaced its water and sewer mains at a rate of roughly one-third of one percent (0.33%) per year. At this rate, it would have taken approximately 300 years to replace the entire system, a cycle significantly longer than the age of the United States (founded in 1776). For comparison, George Washington was born in 1732 and his 294 birthday was Sunday—meaning the replacement cycle would indeed span more time than has passed since before his birth.

When Mr.  Hawkins became general manager of DC WASA some pipes in the D.C. system dated back to 1859, predating the Civil War. The average age of a water main and in the District was approximately 78 years. The sewer mains were a bit older. During his leadership (2009–2017), Mr. Hawkins tripled the replacement rate to one percent per year, reducing the projected cycle to 100 years.

To finance these upgrades and the massive Clean Rivers Project to meet the federal mandate from the Environmental Protection Agency, Hawkins implemented a Water System Replacement Fee and issued the first "green" century bond (a 100-year bond) by a U.S. water utility.  The  EPA estimated  at the time that the national average replacement rate for such infrastructure was approximately 0.5% per year, meaning D.C. was previously lagging behind the national average.

Gas Explosion in Fairfax and Infrastructure Failure

On Sunday, February 15, 2026, just before 10 pm, a powerful natural gas-fueled explosion completely leveled a single-family home in the 14300 block of Quail Pond Court  in Centreville, Virginia. Miraculously, no one was killed.

Piecing together the events from news reports it appears that more than 20 emergency calls were made as residents reported a thunderous "boom" and a home fully engulfed in flames. The fire spread to at least two neighboring homes before  firefighters brought it under control. Thankfully, the sole occupant of the destroyed home escaped onto his second-story deck and jumped to safety, where a neighbor helped break his fall. Only two people sustained minor, non-life-threatening injuries. In subsequent days, investigators determined the explosion was caused by natural  gas seeping through the ground from a leak in a nearby pipeline, rather than a failure within the house itself.

 Immediately following the blast, 51 families were evacuated. As of February 22, approximately 30 to 35 families remain displaced, and at least 82 to 86 homes are still without natural gas service.  The National Transportation Safety Board (NTSB) is leading the federal investigation into the infrastructure failure. While Washington Gas has narrowed the source to a 1,000-foot section of distribution pipeline on Belle Plains Drive that is losing pressure, the exact rupture has not yet been identified as they continued to excavate.

In the wake of the Quail Pond Court  explosion, the NTSB and local officials have implemented strict safety and re-entry protocols. While the primary failure was in an underground pipe, the danger remains that leaking gas can migrate through the soil and enter nearby homes through foundations, basements, or sewer and water lines. 

NTSB Safety Guidance & Advisories

The NTSB has issued general safety alerts and specific instructions for the Centreville incident:

• "Smell Gas, Leave Fast": If you detect a sulfur or "rotten egg" odor, do not attempt to find the source. Evacuate immediately.
• Avoid Ignition Sources: When evacuating, do not use light switches, telephones (landline or cell), or any electrical appliances, as these can create a spark that triggers an explosion.
• Install Gas Alarms: The NTSB Safety Alert SA-098 strongly recommends installing natural gas alarms that meet NFPA 715 standards to detect leaks early. Natural gas seeping into a house from the soil may not contain the familiar rotten egg smell. That is from an additive that can sometimes be striped away by passing through soil.
• Report Observations: Witnesses or those with surveillance video of the explosion are urged to contact the NTSB at witness@ntsb.gov.

There is still an Evacuation Zone in the area. As of Sunday affecting 21–35 families, it is not safe to enter until a formal re-entry process is completed.  Fairfax County Fire and Rescue (FCFRD) is conducting hourly gas level checks in and around homes in the affected area. Re-entry is only permitted once readings "consistently show no detectable gas inside".  Even if the leak is in a street pipe, gas can travel underground and accumulate in structures. Officials confirmed the Quail Pond Court explosion was caused by gas seeping through the ground from an external line.

In addition to the primary investigation on Quail Pond Court, officials have identified and addressed other gas leaks and infrastructure concerns in Centerville. Anyone smelling gas is taken very seriously. Over the past week several smaller leaks have been found.

Rocky Run Drive: On Saturday afternoon, February 21, Washington Gas crews discovered and repaired a "much more minor" gas main leak or break in the 5700 block of Rocky Run Drive

Individual Meter Leaks: During door-to-door safety checks within the Belle Pond Farm neighborhood, crews identified at least one small leak on a residential gas meter. This has led to further questions from residents regarding the overall integrity of the local gas infrastructure. Approximately 35 families remain evacuated, primarily on Buggy Whip Drive  and the immediate vicinity of the blast site.

Leaking natural gas infrastructure is a know problem in the area. In 2014, Dr. Robert B. Jackson  (now at Stanford University) led a study that mapped nearly 6,000 natural gas leaks across the District of Columbia. The research was specifically designed to measure the contribution of urban infrastructure to greenhouse gas (GHG) emissions, as methane is significantly more potent at trapping heat than carbon dioxide, but nonetheless Dr. Jackson documented the pervasiveness of methane leaks in Washington DC. 

Key findings from Dr. Jackson's Environmental Science & Technology study include:

• Pervasiveness: Using a car equipped with high-precision sensors, the team found an average of four leaks for every mile driven in D.C.
• Aging Infrastructure: The leaks were primarily attributed to the city’s aging cast-iron and bare-steel pipelines, some of which dated back to the Civil War era.
• Explosion Risk: At 19 specific sites tested, 12 had potentially explosive concentrations of methane (above the 5% "lower explosive limit").
• Persistent Issues: When the team returned four months after reporting the most dangerous leaks to Washington Gas, nine of those 12 locations remained unrepaired.
• GHG Impact: The study highlighted that while large-scale oil and gas operations are major methane sources, leaky city distribution systems are a significant, often overlooked, contributor to a region's carbon footprint. 

Dr. Jackson has conducted similar mapping in Boston, finding that D.C. had roughly double the leak density of Boston due to its older pipe system. Distribution companies prioritize finding and fixing leaks likely to be explosion hazards, where gas is collecting and concentrating and ignore the small losses from deteriorating iron pipe. Though sometimes they do not do that well enough. Natural gas distribution leaks and explosions cause an average of 9 fatalities, 68 injuries and $500 million in property damage each year, according to the U.S. Pipeline and Hazardous Materials Safety Administration for the period 2004-2025. Northern Virginia is a younger system than D.C so it is likely that leak density is lower; however, surveys of the system should be regularly done. 

For some time our investment in maintaining our infrastructure systems have failed to keep pace with the needs, and investment in infrastructure had faltered as an unseen way to cut costs. Infrastructure is the foundation of our economy, connecting businesses, communities, and people, making us a first world country. https://greenrisks.blogspot.com/2026/01/the-report-card-for-america-2025.html

Slowly Killing a Watershed with Development

All of Prince William County Virginia is in severe drought. Usually, rainfall averages approximately 44 inches per year, but varies from year to year. Last year we were about 9 inches short of average and in the first 4 months of this water year we have had about half the usual amount of rainfall. Rainfall in 2023 and 2024 were fairly close to normal though there were dry months. 

According to studies commissioned by the Interstate Commission on the Potomac River Basin (ICPRB), climate forecasts are for our region to get wetter with more intense rainstorms and droughts to get more severe. These changes in rainfall patterns are forecast to change our water supply. We have also changed the land use which will also impact the availability of water in our region. 

Increasing impervious cover from roads, pavement and buildings as our area continues to build and build and build out (not up) does two things: It reduces the open area for rain and snow to seep into the ground and causes stormwater velocity and quantity to increase. Stormwater runoff increases in quantity and velocity flooding roads and buildings carrying fertilizers, oil and grease, and road salt to our rivers and streams.

Groundwater is an essential part of our water supply. It serves as the savings account for our rivers and streams, providing the baseflow during dry periods.  Groundwater has very little monitoring and management, but there have been some troubling observations in the past few years that seem out of proportion to the rainfall deficit. Generally, groundwater in the Culpeper Basin is renewed each year through precipitation, but as we cover more of the region with impervious surfaces this has been changing.  The water stored in the watershed has always been able to provide adequate water in droughts because historically the withdrawal of water was within the average recharge rate. However,  the only nearby US Geological Survey groundwater monitoring well is no longer stable. The water level has been very slowly falling for over a decade and a half- despite a series of wet years.

Here in Haymarket, there have been other signs of concern. The pictures below were sent to me from the Bull Run Mountain Conservancy a little over two years ago. They showed that the perennial streams: Little Bull Run and Catlett’s Branch were dry during a dry August (and they have experienced dry periods since). At that time Catharpin Creek, another perennial stream, appeared to have been reduced to a series of puddles. This was the driest the Conservancy had seen the streams on Bull Run Mountain, but that may becoming the new normal during dry periods and is a concerning sign of how our watershed is responding to the last round of development at the turn of the 21st century. 

The US Geological Survey emphasizes that virtually all surface-water features—streams, lakes, reservoirs, wetlands, and estuaries—interact with groundwater. All water is interconnected, and groundwater flow and storage are dynamic, constantly changing due to human and climatic stress. Altering the land changes both the quality and quantity of groundwater and streamflow.

Land use changes that increase impervious cover beyond 5–10% from roads, pavement, and buildings have two significant effects: they reduce open areas where rain and snow can infiltrate the ground and recharge groundwater, and they increase stormwater velocity, preventing water from percolating into the earth. This leads to more frequent flooding and less groundwater recharge.

Over time, reduced groundwater levels transform perennial streams into ephemeral ones, disconnecting groundwater from the surface water network (this is what we are beginning to see in Prince William). Once watershed hydrology is destroyed by development, restoration is extremely difficult, if not impossible. The Occoquan watershed is essential for the region’s drinking water supply and the groundwater is an essential part of our streams and rivers.

Properly managed and protected groundwater can be extracted indefinitely and still serve its ecological function as base flow for streams.. Groundwater recharge through precipitation requires adequate area for infiltration; control of sheet flow created by roads and paved areas, as well as protecting the most geologically favorable infiltration points. In a natural environment much of the precipitation soaks into the ground (> 50%). Some water infiltrates deep into the ground and replenishes aquifers, which store huge amounts of freshwater for long periods of time. Some infiltration stays close to the land surface and can seep back into rivers, creeks, and ponds through the hyporheic zone.

A stream is a living ecosystem. It includes not just the water flowing between the banks but the earth, life and water around and under it. Beneath a living streambed is a layer of wet sediment, small stones and tiny living creatures called the hyporheic zone. Stream water filters down into this dynamic layer between surface water and groundwater, mixing with the groundwater pushing up to feed the rivers during dry spells. Water in the hyporheic zone cannot push up the groundwater if the groundwater level has fallen too low. The stream becomes disconnected from the groundwater and the life in this ecological zone is destroyed. The level of groundwater falls usually due to overuse and reduced recharge.

Ward backyard credit Steve Ward

Maintaining natural open areas provides areas of groundwater recharge. According to the U.S. Environmental Protection Agency, increasing  impervious cover levels can significantly impact watershed health increasing stormwater runoff and reducing groundwater recharge. When runoff volume increases, runoff velocity increases, and peak storm flows increase and you get flooding with soil erosion, fast moving stormwater carrying contamination and reduced or eliminated water infiltration into groundwater. The groundwater is essential as the base flow to the streams and rivers that feed the Occoquan Reservoir during the dry months.

A watershed begins to respond to development almost immediately, but long-term ecological and physical changes emerge over 20 to 50 years. Replacing 35–50% of a forested area with impervious surfaces permanently alters how water moves through the landscape. As you develop a watershed, adding impervious coverage, the watershed undergoes profound hydrological and ecological shifts that take years to be seen: 

• Hydrological Alterations:  
• Runoff reaches streams much faster and in greater volumes, leading to higher peak floods and more frequent flooding. Perennial streams begin to experience dry periods when there is no flow or intermittent flow. Ultimately, streams become ephemeral.
• Impervious surfaces prevent water from soaking into the ground, which can cause the water table to drop and streams to dry up during summer months. The changes from the development/ building boom of 2004 are just emerging.
• Physical and Water Quality Changes:
• High-velocity runoff during storms causes severe bank erosion, downcutting (incision), and "blowouts" that destroy aquatic habitats.
• Stormwater runoff collects oils, heavy metals, road salts, and nutrients (nitrates/phosphates) from pavement, transporting them directly into waterways without natural forest filtration.
• Rainwater becomes heated as it flows over sun-warmed pavement, raising stream temperatures and stressing or killing sensitive aquatic life.
• Pavement, compacted lawns, roads and buildings prevents groundwater from percolating into the ground which previously served to cool the earth. Land temperatures increase.

It has been over twenty years since the last big building boom in the county. What we are observing are the cumulative changes from building during the 1990’s -2007.

Infrastructure Challenges: It’s Not Just the Weather

Overview of Recent Water Main Breaks

From January 1 through January 31, 2026, WSSC crews responded to an alarming 360 water main breaks and leaks. The high volume of active issues, with approximately 48 new reports on January 31 alone, ultimately prompted the utility to issue an "Essential-Water-Use-Only" request to customers. This action was a direct response to the overwhelming number of simultaneous breaks and leaks, which strained repair resources.

Beyond Weather: The Role of Aging Infrastructure

Although extreme weather conditions can trigger a spike in water main breaks, the underlying challenge for WSSC Water is rooted in the aging infrastructure and a replacement rate that is not keeping pace with the system’s needs. More than 40% of WSSC's 5,977 miles of water mains are over 50 years old. Many of these pipes are made from brittle cast iron or are unlined, and were installed between 1916 and 1976. As a result, a significant portion of the system has reached or surpassed its intended design life.

Replacement Rate Lagging Behind System Age

The planned pipe replacement rate for the WSSC system is 33 miles per year. For a network totaling 5,977 miles, this pace would result in a complete system replacement every 181 years. However, since 2018, WSSC has replaced only 22 to 25 miles of pipe annually, extending the replacement cycle to more than 200 years. No set of water mains is designed to last such an extended period. Consequently, as the infrastructure continues to age faster than it is being replaced, WSSC faces an inevitable increase in pipe failures.

Comparison with Fairfax Water’s Response and System Age

For context, consider Fairfax Water’s experience during the same period. Following Winter Storm Fern in late January 2026, Fairfax Water also reported a significant number of water main breaks throughout Northern Virginia. However, while WSSC Water reported more than 360 breaks and leaks and implemented an essential-use-only mandate, Fairfax Water managed the situation without issuing a similar broad conservation request.

On January 31, 2026, the Fairfax Water dashboard reported 8 active leaks being addressed and a total of 125 repairs completed during the preceding 30 days.

System Size and Performance Comparison

Fairfax Water maintains approximately 4,027 miles of water mains compared to WSSC’s 5,977 miles. Despite having about 67% of the miles of pipe and experiencing the same weather conditions, Fairfax Water’s number of breaks in January 2026 was only 36% of WSSC’s total. This disparity highlights differences in infrastructure age and maintenance effectiveness between the two utilities.

Relative Infrastructure Age

Fairfax Water’s distribution system is considerably younger than those of WSSC and DC Water. The median age of Fairfax’s water mains is 40 years, and approximately 56% of the mains have been in service for 30 years or less. In contrast, WSSC’s water mains have a median age of 53 years, underscoring the larger proportion of older, more failure-prone pipes in WSSC’s system.

We Need to Maintain the Riparian Buffers we Keep

The Chesapeake Bay Protection Act requires that we keep the riparian buffers-the vegetated areas bordering rivers and streams that act as the "last line of defense" for watershed health. These 50-foot strips of trees are highly effective natural filters that purify water before it reaches the main channel. The riparian buffers serve to remove nutrients pollution, remove sediment and assist in the breakdown some pesticides and herbicides.

Plants and soil microbes capture and transform excess nitrogen and phosphorus from fertilizers or animal waste. Some studies show buffers can reduce nitrate levels by up to 95%. Dense vegetation and leaf litter slow runoff, allowing up to 90% of suspended solids (dirt and grit) to settle out instead of clouding the water. Finally, microbes in the moist, organic-rich soil of a riparian buffer can metabolize and neutralize some common pesticides and herbicides, such as metachlor, much faster than bare fields. 

Watershed & Flood Management

Healthy riparian soils are naturally porous and rich in organic matter, allowing them to absorb high volumes of precipitation and surface runoff. Deep roots from trees, shrubs, and native grasses create a network that holds soil in place and facilitates water infiltration deep into the ground. A thick floor of leaf litter, twigs, and fallen logs acts as an absorbent layer that captures nutrients and further slows the movement of water. Native plants, such as sedges and rushes, are key indicators of a healthy, functioning "riparian sponge".

The riparian buffer including the streambanks and the substrate beneath the channel, acts as a large reservoir that retains water during high-flow conditions and releases it during dry periods to maintain streamflow. This  "natural sponge," buffers regulate the flow of water through the entire watershed. 

During heavy rains, the riparian buffers slow the velocity of floodwaters and provide temporary storage, which reduces peak flows and protects downstream communities from damage. Slowing the water allows more of it to soak into the ground, replenishing the local water table and maintaining steady stream flows even during dry summer months. Deep, interlacing root systems from trees and shrubs anchor the soil, preventing riverbanks from collapsing during high-flow events. 

Environmental & Aquatic Health

Buffers create a stable microclimate essential for many native species. The tree canopies provide shade that can keep water temperatures 3°C to 5°C cooler. This is critical for cold-water species like brook trout, which require high oxygen levels found in cooler water. Leaf litter and woody debris (fallen branches) that fall into the stream provide the primary food source for aquatic insects, which in turn feed fish and amphibians. Stretches of riparian forest serve as essential travel paths for terrestrial animals, connecting fragmented habitats across a developed landscape. 

Economic Value

There are also economic benefits of maintaining these natural systems.  Watershed conservation is often significantly cheaper than building new water treatment plants. However, these thin strips of trees along rivers are highly vulnerable to invasive species because they are essentially "all edge" and no "interior." Unlike deep forests, these narrow bands lack a protective core, making them easy targets for aggressive non-native plants and insects.

Structural Collapse via Invasive Vines

Thin strips are frequently dominated by invasive vines that physically overwhelm and kill the very trees meant to protect the waterway.  Vines like Oriental bittersweet and Chinese wisteria wrap tightly around trunks. As the tree grows, the vine "girdles" it, cutting off the flow of water and nutrients and ultimately killing the tree.  Aggressive climbers such as  English ivy and Mile-a-minute grow over the canopy, blocking sunlight and eventually starving the trees.  The added weight of these vines makes trees top-heavy and more likely to snap or blow over during high winds or heavy snow. 

Degraded Riparian Functions

When invasive species replace native trees in narrow strips, the critical services these buffers provide to the river are compromised.  Many invasive plants, like Japanese knotweed, have shallow root systems compared to native trees. This leads to a loss of streambank stability, increased soil erosion, which clogs the river with sediment and lowers water quality.  Invasive plants often fail to provide the same dense, high-level shade as native canopies. This allows more of the sun’s heat to reach the water, raising temperatures and depleting oxygen, which can be lethal for fish like trout.  Invasive leaf litter often decomposes at different rates than native leaves, altering the food source for aquatic insects at the base of the river's food web. 

The "Edge Effect" Vulnerability

Because these strips are narrow, they are exposed to constant "edge effects" that favor invaders over natives. Rivers act as highways for invasive seeds, which are easily deposited by floodwaters onto the disturbed, high-light edges of narrow buffers.  Invasive plants like Tree of Heaven (Ailanthus altissima) use "allellopathy"—releasing toxic chemicals into the soil—to prevent native seedlings from ever getting established.  Narrow strips dry out faster than deep forests. Invasives are often more drought-tolerant, allowing them to out-compete native trees that are already stressed by their exposed position.

In Virginia, narrow riparian buffers are highly susceptible to "edge-adapted" invasive species that thrive in the sunlight and disturbed soil common along riverbanks. We have all seen the narrow strips of dead trees wrapped in the vines of the invasive species.  The  species that are currently of high concern for Virginia's:

• Tree-of-Heaven (Ailanthus altissima): A fast-growing tree that outcompetes natives and serves as the primary host for the Spotted Lanternfly, another destructive invasive species.
• Japanese Stiltgrass (Microstegium vimineum): This annual grass blankets forest floors near streams, suppressing native groundcover through dense growth and chemical release (allelopathy).
• Oriental Bittersweet (Celastrus orbiculatus): A woody vine that spirals around tree trunks, eventually girdling and strangling them to death.
• Porcelain-berry (Ampelopsis brevipedunculata): A vigorous climber that smothers canopies, much like Kudzu, but is specifically aggressive in moist, sunny riparian edges.
• Japanese Knotweed (Reynoutria japonica): Notorious for its deep, aggressive root systems that can damage infrastructure; it forms dense monocultures that destabilize stream banks.
• Multiflora Rose (Rosa multiflora): A thorny, thicket-forming shrub that creates impenetrable barriers and displaces native vegetation.
• Autumn Olive (Elaeagnus umbellata): A shrub that fixes nitrogen in the soil, altering the chemistry to favor its own growth while shading out sun-dependent native plants.
• Hydrilla (Hydrilla verticillata): An aquatic plant that clogs waterways and displaces native aquatic life, often spreading via fragments moved by water or boaters. 

These wooded areas need to be managed to maintain their environmental function and prevent these buffers from becoming dead tree stands that will ultimately only serve as wildfire fuel. In Virginia, wildfires are a growing threat, driven by a convergence of climatic, ecological, and human factors. While Virginia typically sees most fires in the spring and fall, the risk is becoming more intense and unpredictable. In 2025 Spring Season: 437 wildfires were suppressed between February and April, burning over 8,100 acres and destroying 22 homes.

In the future the threat could be greater. Average temperatures which have risen over 2°F since 1900 in some regions—increase evaporation, causing forest fuels and soil to dry out more quickly. The 2025 Virginia Climate Assessment noted an increase in "short-term and flash droughts," which rapidly turn lush vegetation into dry fuel.  Combined with greater variability in wind patterns and humidity creates a "recipe for extreme fire behavior."

To control the wildfire risk, we need to control the spread of invasive plant species and the creation of dead tree stands. Riparian buffers left after development of wooded parcels must have continual management of invasive plant species. Successful management of these species requires a multi-year commitment, as many can resprout from small root fragments. 

• Prioritize Tree-Saving: Focus first on removing invasive vines from the canopy. Use the "window" method: cut vines at shoulder height and again at the base to kill the upper sections without pulling them down, which can damage the tree.
• Mechanical Removal: Hand-pull small infestations early in the spring (April–May) when the soil is soft and roots are smaller. Ensure you remove the entire root to prevent regrowth.
• Strategic Herbicide Use: For established woody plants like Tree-of-Heaven or Autumn Olive, "cut-stump" or "basal bark" treatments are often more effective than pulling. Always follow EPA-approved labels and avoid spraying near water during rain to prevent runoff.
• Proper Disposal: Never compost invasive plant debris. Bag seeds and fruit in plastic and dispose of them with regular trash to prevent accidental spreading.
• Re-plant with Natives: Once an area is cleared, immediately plant native alternatives like Black Willow or Serviceberry to stabilize the soil and shade out potential new invaders.