PFAS “Forever Chemicals” in Gaithersburg Drinking Water: What Maryland Residents Need to Know About Their Legal Rights
You just heard that the water coming out of your kitchen faucet in Gaithersburg has PFAS in it. Maybe you saw the news. Maybe you got a notice. Maybe a neighbor told you. And now you are standing in your kitchen, looking at the glass your child drank from this morning, wondering what “forever chemicals” means for your family — and whether anyone is going to answer for it.
We are going to tell you everything we know about what happened, what it means for your health, what Maryland law allows you to do about it, and what you should do right now. Not in jargon — in plain English, the way we would explain it to you if you were sitting across our desk.
Here is the first thing you need to hear: your concern is legitimate. PFAS — per- and polyfluoroalkyl substances — are not a hypothetical risk. The federal government’s own health goal for two of these chemicals in drinking water is zero. Not a small number. Zero. The Environmental Protection Agency determined there is no level of PFOA or PFOS in drinking water that carries no risk. And authorities have now announced high levels of PFAS in the water supply serving your community in Gaithersburg.
The second thing: there are legal paths. Companies that designed, manufactured, and distributed these chemicals — and the facilities that discharged them into the water and soil — can be held accountable under Maryland law for medical monitoring, property damage, and personal injury. The same chemical manufacturers have already agreed to pay billions to public water systems across the country to clean up PFAS contamination. The question for your family is not whether the science exists. It does. The question is whether you act in time to preserve the evidence that connects your exposure to the responsible parties.
That is what we do. We handle toxic tort cases — the legal claims that arise when people are exposed to dangerous substances without their knowledge or consent. And we are going to walk you through every piece of this, from the chemistry to the courthouse, so that when you finish reading this page, there is no follow-up search left to type.
What Just Happened to Your Water in Gaithersburg
PFAS are a class of manmade compounds used for decades in everything from firefighting foam and nonstick cookware to stain-resistant fabrics and industrial manufacturing. They are called “forever chemicals” for one reason: they do not break down. Not in water. Not in soil. Not in the human body. They persist, they accumulate, and they move.
The contamination discovered in Gaithersburg follows a pattern that has repeated across the country. Communities discover PFAS only after testing reveals contamination that may have existed for years — sometimes decades — before anyone looked for it. In North Carolina, GenX contamination from a chemical manufacturing facility polluted the Cape Fear River and the drinking water supply for hundreds of thousands of people. In Maine, sewage sludge spread on farmland contaminated dairy herds so severely that farmers had to euthanize entire herds. In Texas, ranchers blamed PFAS-contaminated biosolids for sickening cattle and destroying multigenerational farming operations. Now the same story has arrived in Montgomery County.
What makes Gaithersburg’s situation distinct is its geography. Gaithersburg sits along the I-270 technology corridor between Rockville and Germantown — one of the most densely concentrated biotechnology, research, and industrial corridors in the mid-Atlantic. Montgomery County is Maryland’s most populous county, home to more than one million residents. The county’s geology includes fractured-bedrock aquifers — underground water systems where cracks and fissures in the rock can carry contaminants from surface pollution into groundwater supplies that feed both public systems and private wells. The I-270 corridor hosts numerous industrial, biotechnology, and research facilities that represent potential historical PFAS source sites, and the area’s proximity to federal facilities and former military installations creates additional source-investigation vectors.
Your water is primarily supplied by WSSC Water, a bi-county governmental agency that provides water and wastewater services to Montgomery and Prince George’s counties. When authorities announce “high levels” of PFAS in the water supply, the first question any attorney asks is: high relative to what? And the answer to that question is where the law begins.
In April 2024, the EPA finalized the first-ever federal drinking water limits for PFAS. The rule set the Maximum Contaminant Level — the legal limit — for PFOA and PFOS at 4.0 parts per trillion. That number is staggeringly small. Four parts per trillion is roughly equivalent to four drops of water spread across twenty Olympic-sized swimming pools. And the health-based goal — the Maximum Contaminant Level Goal, the level at which the EPA determined there is no known adverse health risk — was set at zero. The EPA found no safe threshold for these chemicals in your drinking water.
But here is where the story takes a turn that should make every Gaithersburg resident pay close attention. The EPA under its current administrator has announced plans to roll back the drinking water standards for several PFAS chemicals. While the agency kept the PFOA and PFOS limits in place, it proposed rescinding the standards for GenX, PFHxS, PFNA, and PFBS — the same GenX chemical that contaminated the Cape Fear River in North Carolina and the drinking water for hundreds of thousands of residents. As of June 2026, this rescission is proposed, not final. The compliance deadline for PFOA and PFOS, originally set for 2029, has also been proposed for extension to 2031.
Let us be plain about what this means. The science that made these chemicals dangerous did not change when the paperwork did. The EPA’s own health goal remains zero. The International Agency for Research on Cancer — the world’s leading cancer-science body — classified PFOA as a Group 1 carcinogen, its highest category: carcinogenic to humans. That classification is based on sufficient animal evidence and strong mechanistic evidence, with limited human evidence for testicular and renal-cell cancer. PFOS was classified as Group 2B: possibly carcinogenic to humans. The chemistry is the same. Only the regulatory will has shifted.
This regulatory rollback creates a landscape where accountability for contamination is actively contested — which is exactly why the legal fight, not just the regulatory fight, matters so much for families in Gaithersburg.
The Health Risks: What PFAS Does Inside the Human Body
PFAS are persistent, bioaccumulative chemicals. They bind to serum proteins in your blood and concentrate in the liver and kidneys. They are not metabolized — your body cannot break them down or eliminate them efficiently. Some PFAS compounds have half-lives in the human body measured in years, meaning that once they enter your bloodstream, they remain there for a very long time, accumulating with each additional exposure.
The health effects associated with PFAS exposure have been studied extensively, most notably through the C8 Science Panel — an independent group of epidemiologists established as part of a class-action settlement against DuPont over PFOA contamination in the Mid-Ohio Valley. The panel studied approximately 69,000 people who had been exposed to PFOA in their drinking water and found what it called “probable links” between PFOA and six specific conditions:
- Kidney cancer
- Testicular cancer
- High cholesterol
- Thyroid disease
- Pregnancy-induced hypertension
- Ulcerative colitis
More recent scientific reviews have characterized the cancer evidence as “supportive but not definitive,” and the science continues to evolve. But the C8 Science Panel findings represent independent scientific determinations made by court-appointed epidemiologists, not arguments manufactured by lawyers. And the IARC Group 1 classification of PFOA as a human carcinogen reinforces the seriousness of the cancer risk.
The diseases associated with PFAS exposure are latency diseases — they develop over time, sometimes years or decades after the exposure begins. This is critical for two reasons. First, you may not know you have been harmed yet. The cancer may not have developed. The thyroid disease may not have been diagnosed. The elevated cholesterol may not have been connected to PFAS. Second, the latency means the clock on your legal claim may not have started on the day you were exposed — it may have started, under Maryland’s discovery rule, on the day you discovered (or should have discovered) that you were injured and that PFAS exposure caused it.
This is why medical monitoring is so important. Medical monitoring is a legal claim that does not require you to be sick right now. It requires showing that you face a significantly increased risk of latent disease because of your exposure, and that a court-supervised medical surveillance program — funded by the responsible parties — is necessary to catch disease early, when it is treatable. A medical monitoring program for PFAS-exposed residents typically includes regular blood serum testing, cancer screening appropriate to the exposed population, thyroid function testing, and immune system evaluation.
The single most urgent medical step for any Gaithersburg resident who has been drinking contaminated water is blood serum PFAS testing. Here is why: serum PFAS levels reflect relatively recent exposure. If the contamination is ongoing — if you are still drinking the water, or if the contamination was only recently discovered and may have been present for years — testing now captures your peak body burden. Once exposure stops or is reduced, your serum PFAS levels will gradually decline. Testing later may understate your historical exposure, making it harder to connect any future disease to the contamination. Testing now, while the exposure is documented and ongoing, creates the baseline medical evidence that supports both your medical monitoring claim and any future personal injury claim.
We need to be honest with you about the proof challenge. PFAS is everywhere. Nearly everyone in the United States has some level of PFAS in their blood. The defense in any PFAS case will argue that your exposure came from background sources — food packaging, nonstick pans, stain-resistant carpets — not from the contaminated water supply. The counter is not that you have PFAS in your blood. Everyone does. The counter is that your exposure is elevated — measurably higher than background — because you drank water from a specific contaminated source. That is why blood serum testing matters, and that is why source identification — tracing the contamination to the facilities that released it — is the foundational battle in any PFAS case.
Who Is Responsible: The Defendant Map for Montgomery County
A PFAS contamination case is not one defendant. It is a map of potentially responsible parties, each connected to the contamination through a different pathway, each with a different legal theory of liability, and each with a different insurance or balance-sheet structure behind it. Identifying every viable defendant is foundational work — naming the wrong entity or missing the right one can sink a case before it starts.
The first category is PFAS chemical manufacturers. These are the companies that designed, manufactured, and distributed PFAS compounds — the historic producers whose products entered the stream of commerce and foreseeably contaminated water supplies. There is an extensive public record of internal corporate knowledge of PFAS health hazards, documented in prior litigation, showing that some manufacturers possessed knowledge of health and environmental risks for decades before public disclosure. The theories of liability against manufacturers include strict products liability for design defect (PFAS are inherently dangerous due to environmental persistence, bioaccumulation, and toxicity), strict products liability for failure to warn (manufacturers possessed internal knowledge of risks but failed to adequately warn end users, municipalities, or the public), and negligence. Under Maryland law, these manufacturers can also be pursued for punitive damages, which are available in toxic tort cases and are supported by the substantial public record of internal corporate knowledge predating public disclosure.
The second category is facilities that historically used or discharged PFAS in the Gaithersburg and I-270 corridor area. These are the industrial, biotechnology, research, or military installations that may have released PFAS-containing materials into soil, groundwater, or surface water. The I-270 corridor is one of the most concentrated technology corridors in the country, and its industrial history makes source identification both complex and critical. Identifying these facilities requires pulling industrial discharge permits and compliance records — and those records need to be requested before any regulatory rollback affects retention requirements.
The third category is wastewater utilities or biosolids applicators — if sewage sludge spreading is identified as a source pathway. Treated sewage sludge has been spread on farmland as fertilizer for decades, and PFAS in the sludge can leach into groundwater. If biosolids application in Montgomery County is identified as a contamination pathway, the entities that distributed and applied contaminated biosolids may face claims for negligent distribution, failure to test biosolids for PFAS before land application, and the resulting contamination of water supplies.
The fourth category is WSSC Water or the applicable public water system operator. The public water system that delivered contaminated water to your home may face claims for potential failure to adequately test for, monitor, or treat PFAS in delivered drinking water. But WSSC Water is a governmental entity, and claims against governmental entities in Maryland require strict compliance with the Maryland Local Government Tort Claims Act’s notice provisions — which typically require notice within one year. This is a separate, shorter, and less forgiving deadline than the general three-year statute of limitations, and missing it can extinguish a claim against the governmental entity even when the general deadline has not run.
The fifth category is products manufacturers that incorporated PFAS into consumer and industrial products — nonstick coatings, stain-resistant treatments, food packaging — and introduced those products into the stream of commerce with inadequate warnings regarding environmental persistence and bioaccumulation.
Under the federal Superfund law, the liability picture is even more aggressive. In 2024, the EPA designated PFOA and PFOS as CERCLA hazardous substances, opening cost-recovery and contribution actions against responsible parties for cleanup expenses. Under CERCLA, the government can reach back decades:
The law imposes liability on four classes of Potentially Responsible Parties: (1) the current owner or operator of the facility; (2) the owner or operator at the time of disposal; (3) generators — those who arranged for disposal of hazardous substances; and (4) transporters who selected the site. Courts read this liability as strict, joint and several, and retroactive. The only statutory defenses are act of God, act of war, or act or omission of a third party under specific conditions.
In plain English: a company does not have to be proven careless. If it owned the site, ran it, made the waste, or hauled it there, it can be made to pay for the entire cleanup — even for pollution from decades before the rule existed. There are almost no excuses. And because the liability is joint and several, any one responsible party can be tapped for the full cost, regardless of its individual share.
This is the federal hammer behind every PFAS contamination case. Even as the EPA rolls back drinking water standards, the CERCLA designation remains in force, and it creates a powerful legal lever for forcing the companies that caused the contamination to pay for testing, treatment, cleanup, and disposal.
Maryland Law: Your Rights and the Clocks That Govern Them
Maryland’s legal framework for PFAS exposure claims has several distinctive features — some advantageous, some demanding — that you need to understand before you decide what to do.
The statute of limitations. Maryland’s general tort statute of limitations is three years from the date the cause of action accrues — which, under Maryland’s discovery rule, means three years from the date you discovered, or by reasonable diligence should have discovered, your injury and its cause. In toxic exposure cases, where contamination may have existed for years before detection, the discovery rule is particularly important. The clock may not have started on the day you were exposed to PFAS. It may have started on the day authorities announced the contamination in your community, or on the day you learned that your water supply was affected, or on the day you were diagnosed with a PFAS-associated condition and connected it to the water. We are not going to tell you your deadline has passed or has not passed — that depends on your specific facts, and it is one of the first things we evaluate. But we will tell you this: do not assume you have plenty of time. The discovery rule is generous, but it is not unlimited, and some states impose an outer deadline — a statute of repose — that can cut off a claim even before discovery. Confirm the current Maryland rule with an attorney in your state before relying on any deadline.
Contributory negligence. Maryland is one of the few remaining pure contributory negligence jurisdictions in the United States. Under this doctrine, any fault on the part of the plaintiff bars recovery entirely — not reduced, barred. This sounds frightening, but its application to PFAS exposure cases is limited. You unknowingly consumed contaminated water that you had no reason to suspect was unsafe. You did not choose to drink PFAS. You did not know it was there. The doctrine that bars recovery for plaintiffs who contributed to their own harm has little purchase when the harm was invisible, odorless, and tasteless, and when the information about its presence was withheld from you. But the defense will try — they will look for any way to assign you a share of fault. Every percentage point they can pin on you, in a contributory negligence state, is not just a reduction. It is a bar. This is why the theory of your case matters from day one.
Government entity notice. If WSSC Water or any other governmental entity is named as a defendant, the Maryland Local Government Tort Claims Act requires strict compliance with its notice provisions — typically requiring notice within one year of the injury. This is a separate, shorter deadline than the three-year statute of limitations, and it is unforgiving. Missing it can extinguish the claim against the governmental entity even when the three-year clock is still running. This deadline alone is reason enough to talk to an attorney now, not later.
No damages cap. Maryland does not impose a general cap on compensatory or punitive damages in toxic tort cases. The non-economic damage cap that exists in Maryland applies only to medical malpractice claims under the Maryland Health Care Malpractice Claims Act. For PFAS exposure cases — which are toxic tort claims, not malpractice claims — the full measure of compensatory and punitive damages is available. This is a significant advantage. In states that cap non-economic damages, the human costs of contamination — the fear, the anguish, the loss of use and enjoyment of property — are artificially limited. Maryland does not do that here.
Recognized theories. Maryland courts have recognized medical monitoring, nuisance, and trespass theories in environmental contamination cases, providing a doctrinal foundation for PFAS claims. The available theories include:
- Strict products liability — design defect: PFAS chemicals are inherently dangerous due to environmental persistence, bioaccumulation, and toxicity; manufacturers placed a defective product into the stream of commerce that foreseeably contaminated water supplies.
- Strict products liability — failure to warn: Manufacturers possessed internal knowledge of PFAS health and environmental risks for decades but failed to adequately warn end users, municipalities, or the public.
- Negligence: Manufacturers and source-site operators breached a duty of reasonable care in designing, producing, handling, storing, or disposing of PFAS-containing materials.
- Private nuisance: PFAS contamination of private wells and property constitutes an unreasonable interference with residents’ use and enjoyment of their property.
- Public nuisance: Contamination of community drinking water supplies affects a public right — access to safe water — and constitutes an unreasonable interference with a right common to the public.
- Trespass: PFAS particles physically invaded and remain on private property and in private water wells without owner consent.
- Medical monitoring: Exposed residents face a significantly increased risk of latent disease warranting a court-supervised medical surveillance program funded by defendants.
- Negligence per se: Violation of applicable federal Safe Drinking Water Act standards, EPA PFAS National Primary Drinking Water Regulations, and Maryland environmental statutes may establish duty and breach — though the current regulatory rollback may complicate this theory for the chemicals whose limits are being rescinded. The PFOA and PFOS limits, which the EPA has committed to keeping, remain available as the regulatory standard.
The Evidence Clock: Records That Exist and How Fast They Disappear
A PFAS contamination case is built from records — government sampling data, corporate documents, water test results, and blood serum levels. Each of these records exists on a clock. Some are on government retention schedules that may permit destruction. Some are on corporate retention policies that can quietly expire. And some — the most important ones for individual residents — are biological, declining in your own bloodstream with every passing month.
WSSC Water and MDE PFAS sampling data. The sampling data that established the contamination in Gaithersburg — the specific chemicals found, at what levels, in which water sources, over what time period — is the foundational evidence for any claim. This data is held by WSSC Water and the Maryland Department of the Environment. It should be requested through the Maryland Public Information Act immediately. Government data retention schedules may permit destruction of raw sampling data, and the longer the request is delayed, the greater the risk that the granular data — the parts-per-trillion readings that prove the severity and duration of contamination — may be reduced or lost.
Historical biosolids application records. If sewage sludge spreading is identified as a contamination pathway, historical biosolids application records for Montgomery County agricultural and recreational land become critical. These records identify where contaminated sludge was spread and when, establishing the pathway from land application to groundwater contamination. Agricultural and municipal records are subject to retention limitations, and land use changes may destroy physical evidence of historical application. These records need to be requested before they cycle out of retention.
Industrial discharge permits and compliance records. The I-270 corridor’s industrial, biotechnology, and research facilities operate under discharge permits that may contain historical PFAS discharge data. Permit records and compliance files for facilities along the corridor should be requested before any regulatory rollback affects retention requirements. The EPA’s proposed rollback of certain PFAS drinking water standards does not change the fact that these facilities were required to report what they discharged — but the political atmosphere may affect how aggressively those records are preserved and produced.
Blood serum PFAS testing for affected residents. This is the most time-sensitive evidence for individual claimants. Serum PFAS levels reflect relatively recent exposure — they decline over time once exposure stops. Testing should occur while contamination is ongoing to capture peak body burden before levels decline. If you wait — if the contamination is remediated and your exposure drops — your serum levels will fall, and the test will understate the dose you actually received. This is not a theoretical concern. It is the single most common way that individual PFAS exposure cases are weakened: the plaintiff waited to get tested, and by the time they did, the evidence of how much PFAS was in their body had partially disappeared.
Internal corporate documents from PFAS manufacturers. Much of the discovery showing what PFAS manufacturers knew about health and environmental risks — and when they knew it — has already been produced in prior litigation, including the AFFF multidistrict litigation and earlier state-court PFAS cases. These documents demonstrate the timeline of corporate awareness and, in some cases, concealment or suppression of findings. Securing access to this already-produced discovery through coordination or subpoena is time-sensitive — not because the documents will be destroyed, but because the procedural mechanisms for accessing them become more complex as the original cases age.
Private well water testing results and homeowner filtration records. If you are on a private well rather than the public water system, your water testing results document contamination of your private water source and establish your exposure timeline. Well water conditions change over time — current testing may not reflect historical contamination levels. Sequential testing — multiple rounds over time — is needed to establish the temporal pattern of contamination. If you have already had your well tested, preserve every result. If you have not, test now, and test again on a schedule.
The preservation letter — a formal demand that every potential defendant and custodian of evidence freeze all relevant records, data, and samples — is the first instrument a lawyer deploys in a PFAS case. It goes out the day you call. Not the week. Not the month. The day. Because every day that passes without a preservation demand is a day the evidence can legally disappear.
What Your PFAS Exposure Case Is Worth
We are not going to tell you a specific number for your case, because the value of any claim depends on its specific facts — the level and duration of your exposure, whether you have a manifested disease, the size of the exposed population, and the identity and solvency of the responsible parties. But we can tell you the framework, and we can tell you what comparable cases have produced.
For a mass contamination event affecting a densely populated area like Montgomery County — where the exposed population could number in the tens of thousands — the case value range is extraordinarily wide. Medical monitoring alone, for a large class of exposed residents, can drive seven-to-eight-figure exposure for the defendants. Individual personal injury claims — where a resident has developed a PFAS-associated cancer like kidney cancer or testicular cancer — regularly exceed seven figures in comparable litigation.
The economic damages in a PFAS case include the cost of alternative water supplies (bottled water, delivered water, point-of-entry filtration systems that can cost thousands of dollars per home), property value diminution (homes with contaminated water supplies lose value, and that loss is compensable), and medical monitoring programs. A court-supervised medical monitoring program for a large exposed population — encompassing regular blood serum testing, cancer screening, thyroid function testing, and immune system evaluation — is itself a major cost category.
The non-economic damages encompass the fear of disease, the emotional distress of living with known contamination, and the loss of use and enjoyment of property. In Maryland, unlike many states, there is no cap on non-economic damages in toxic tort cases, so these human costs are fully compensable.
For residents with manifested PFAS-associated diseases — kidney cancer, testicular cancer, thyroid disease, ulcerative colitis, pregnancy-induced hypertension, elevated cholesterol — full personal injury damages are available, including past and future medical treatment, lost wages, lost earning capacity, and pain and suffering. In fatal cases, wrongful death claims preserve the family’s right to recover, and survival actions preserve the estate’s claim for the decedent’s pain and suffering between injury and death.
Punitive damages are available in Maryland toxic tort cases and are supported by the substantial public record of chemical manufacturers’ internal knowledge of PFAS health risks predating public disclosure by decades. This is not speculation — it is documented corporate conduct, much of it already in the public record from prior litigation.
For context, the national PFAS litigation has already produced historic settlements. 3M agreed to pay approximately $10.3 billion in present value — up to approximately $12.5 billion nominally over thirteen years — to U.S. public water systems for PFAS remediation. DuPont, Chemours, and Corteva agreed to approximately $1.185 billion with public water providers. These settlements resolved municipal water utility contamination claims and contained no admission of liability. They are separate from the personal-injury cases — the cases brought by individual people who got sick. Those personal-injury cases are still being fought, one by one, in courts across the country.
The value deflators in any PFAS case are real and must be stated honestly: source identification uncertainty (tracing the contamination to specific manufacturers or discharge sites is complex and contested), Maryland’s contributory negligence standard (though largely inapplicable to unknowing residential exposure, it is a live issue), the need for individual-specific causation proof for manifested disease claims (proving that your kidney cancer was caused by PFAS, not by something else, requires careful expert analysis), and the regulatory uncertainty from EPA rollbacks that may complicate negligence per se theories for the chemicals whose limits are being rescinded.
Past results depend on the facts of each case and do not guarantee future outcomes. What we can tell you is that the legal architecture exists, the science is strong and getting stronger, and the companies that made these chemicals have already demonstrated, through multi-billion-dollar settlements, that they understand the magnitude of their exposure.
The Defense Playbook: What the Other Side Will Try
Every PFAS case faces a predictable set of defense strategies. We are going to name them before they happen, because knowing what is coming is the first protection.
Play 1: “The levels are within regulatory limits.” The defense will point to the EPA’s drinking water standards and argue that the contamination is legal, therefore safe. The counter is that the EPA’s own health goal for PFOA and PFOS is zero — meaning the agency found no safe amount. The 4.0 parts-per-trillion legal limit is a compromise between health and feasibility, not a safety guarantee. And for the chemicals whose limits the EPA is rolling back, the rollback is a political decision, not a scientific one. The IARC Group 1 classification of PFOA did not change when the EPA changed its leadership. The chemistry is the same.
Play 2: “You cannot prove our facility caused your specific exposure.” PFAS is ubiquitous — nearly everyone has some level in their blood. The defense will argue that your exposure came from background sources, not from their facility or their product. The counter has two parts. First, source identification through hydrogeology and environmental forensics can trace contamination plumes from specific discharge sites to specific water supplies. Second, under CERCLA, the liability is strict, joint and several, and retroactive — we do not need to prove that your specific facility alone caused the contamination. If you owned the site, ran it, made the chemical, or hauled it, you can be held responsible for the entire cleanup.
Play 3: “The science linking PFAS to your disease is not settled.” The defense will characterize the health evidence as speculative or contested. The counter is that the C8 Science Panel — independent, court-appointed epidemiologists — found probable links between PFOA and six specific conditions. The IARC classified PFOA as a Group 1 human carcinogen. These are not lawyer arguments. They are determinations made by the world’s leading scientific bodies. The defense can argue about dose and specific causation — and they will — but they cannot honestly argue that the science is absent.
Play 4: “Maryland’s contributory negligence bars your claim.” In a pure contributory negligence state, any fault on the plaintiff bars recovery. The defense will look for any way to assign you a share of fault. The counter is that you unknowingly consumed contaminated water you had no reason to suspect was unsafe. You did not choose to drink PFAS. The doctrine that bars recovery for plaintiffs who contributed to their own harm has no fair application to a family that turned on the tap and drank what came out.
Play 5: The quick settlement check with a release. In some cases, a settlement offer may arrive early — before the full scope of exposure and injury is understood, before blood serum testing is complete, before the latency period for any cancer has run. A release signed today closes the door on a disease that may not be diagnosed for years. Any settlement offer that requires you to release future claims — claims for diseases that have not yet manifested — should be reviewed by an attorney before it is signed. The statute of limitations is not the only clock that matters. The biological clock — the latency of PFAS-associated disease — is longer, and a release that waives future disease claims is a permanent surrender of rights you may not yet know you have.
How a PFAS Contamination Case Is Actually Built
A PFAS case is not filed on day one. It is built, step by step, from the evidence outward. Here is how it works.
Week one: the preservation demand. The day you call, a preservation letter goes out to every potential defendant and evidence custodian — WSSC Water, MDE, the facilities along the I-270 corridor whose discharge histories are relevant, and the PFAS manufacturers whose products are implicated. That letter orders them to freeze all sampling data, discharge records, biosolids application records, internal communications about PFAS, and any other evidence relevant to the contamination. The letter creates a legal duty to preserve. If evidence disappears after that letter is on file, the consequences range from adverse-inference instructions (the jury may assume the lost evidence was as bad as the plaintiff says) to sanctions.
The records offensive. Simultaneously, formal records requests go out under the Maryland Public Information Act to WSSC Water and MDE for all PFAS sampling data, testing protocols, timelines, and enforcement correspondence. Industrial discharge permits and compliance records for I-270 corridor facilities are requested from the appropriate state and federal agencies. Historical biosolids application records for Montgomery County are sought from municipal and agricultural sources. Every request is made in writing, with a deadline, and with a follow-up plan for agencies that delay.
Source identification. This is the foundational battle. A hydrogeologist and an environmental forensic chemist are retained to trace the PFAS contamination to its source or sources. This work involves analyzing the specific PFAS compounds found in the water (different sources leave different chemical fingerprints), modeling groundwater flow through Montgomery County’s fractured-bedrock aquifer system, identifying historical discharge sites and biosolids application areas, and building a transport model that connects the source to the contamination in the water supply. Source identification determines which defendants are viable and whether negligence per se theories survive the EPA’s regulatory rollback.
Blood serum testing program. For individual residents, blood serum PFAS testing establishes the exposure dose — the actual amount of PFAS in your body. This is the biological evidence that connects you, specifically, to the contamination. Testing is arranged while exposure is ongoing to capture peak body burden. The results, combined with your residence history, water source documentation, and medical records, form the foundation of both medical monitoring claims and individual personal injury claims.
Expert assembly. A PFAS case requires a specific team of experts: a board-certified toxicologist for general causation (does PFAS cause this disease?), an epidemiologist for dose-response modeling (how much exposure increases disease risk by how much?), a hydrogeologist for source and transport analysis (where did the PFAS come from and how did it get to your water?), and a life-care planner for medical monitoring program design (what testing, at what frequency, at what cost, for how long?).
The dual track. A well-built PFAS case evaluates two tracks simultaneously. The first is a class action or mass action for medical monitoring and property damage — representing the broader exposed population of Gaithersburg and Montgomery County residents who face increased disease risk but may not yet be sick. The second is an individual mass tort track for residents with manifested PFAS-associated diseases — kidney cancer, testicular cancer, thyroid disease, ulcerative colitis — who have actual personal injury claims. The two tracks coordinate where manufacturer discovery overlaps, particularly with the national AFFF multidistrict litigation, where much of the manufacturer-level discovery has already been produced.
Discovery and depositions. Once the case is filed, discovery forces the defendants to produce internal documents — toxicity studies, corporate communications about PFAS health risks, marketing materials, warning decisions, disposal records. Much of this discovery has already been produced in prior PFAS litigation, and securing access through coordination or subpoena is a time-sensitive priority. Depositions follow, where corporate representatives explain under oath what the company knew, when it knew it, and what it chose to do or not do with that knowledge.
Mediation and trial. Mediation is deferred until source identification is locked and the exposed population is quantified. In Montgomery County, the jury pool is affluent and highly educated — a jurisdiction that produces juries capable of following sophisticated scientific evidence but potentially skeptical of claims perceived as speculative. Voir dire must explore juror attitudes toward environmental regulation, corporate accountability, and scientific complexity. The trial strategy follows Maryland’s acceptance-of-judgment framework rather than any Stowers-analogue, meaning the timing and structure of settlement demands must align with Maryland’s specific procedural rules.
Your First 72 Hours: A Practical Roadmap
If you are a Gaithersburg resident who has just learned that your water supply has PFAS contamination, here is what to do — and what not to do — in the first 72 hours.
Do this:
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Document your water source. Are you on the WSSC Water public system or a private well? Find your most recent water bill. If you are on a private well, locate any prior water test results. Write down how long you have lived at your current address and where you lived before. Your residence history is your exposure timeline.
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Request your water testing results. Contact WSSC Water and request the specific PFAS testing results for your area — which chemicals were found, at what levels, over what time period. You have a right to this information. Put the request in writing.
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Get blood serum PFAS testing. This is the single most time-sensitive step. Serum PFAS levels decline once exposure stops. Testing now, while contamination is documented and ongoing, captures your peak body burden. Contact your physician or a laboratory that performs PFAS biomonitoring. Preserve every test result.
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Document your health conditions. Make a list of every diagnosis you and your family members have received — especially kidney cancer, testicular cancer, thyroid disease, ulcerative colitis, pregnancy-induced hypertension, and elevated cholesterol. Include the date of diagnosis and the treating physician. Do not attribute any diagnosis to PFAS exposure yet — that determination requires medical and scientific evaluation. But document what exists.
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File a Maryland Public Information Act request. Submit a written request to WSSC Water and MDE for all PFAS sampling data, testing protocols, and enforcement correspondence for Gaithersburg and Montgomery County. Government data retention schedules may permit destruction of raw sampling data — the sooner the request is on file, the sooner the records are frozen.
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Preserve any filtration or water treatment records. If you have already installed a water filter, purchased bottled water, or taken any steps to address the contamination, keep every receipt, every invoice, every product label. These are your mitigation costs — compensable economic damages.
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Note the government entity notice deadline. If WSSC Water or any governmental entity might be named in a claim, the Maryland Local Government Tort Claims Act requires notice — typically within one year. This is a separate, shorter deadline than the general three-year statute of limitations. Do not let this clock run without understanding it.
Do NOT do this:
- Do not sign anything from a water provider, insurance company, or corporate representative without having it reviewed by an attorney. A release signed today closes the door on a disease that may not be diagnosed for years.
- Do not give a recorded statement to any insurance adjuster or corporate representative. What sounds like a casual conversation can become evidence used to minimize or deny your claim.
- Do not assume you have plenty of time. The three-year statute of limitations runs from discovery, and the one-year government notice deadline may already be running. Evidence is disappearing on its own schedule.
- Do not post about your case on social media. Everything you post is discoverable and can be used by the defense to undermine your claim.
- Do not wait to see if you get sick before acting. Medical monitoring is a claim you can make now, before disease manifests, to force the responsible parties to fund the surveillance that catches disease early. Waiting until you are diagnosed to act may mean losing the evidence that could have connected your disease to the contamination.
Frequently Asked Questions
Can I sue for PFAS in my drinking water in Maryland?
Yes. Maryland law allows residents exposed to PFAS-contaminated drinking water to pursue claims against the chemical manufacturers, the facilities that discharged PFAS into the environment, and potentially the public water system operator. The available claims include medical monitoring (for residents who face increased disease risk but are not yet sick), property damage (for diminution in property value and loss of use), and personal injury (for residents who have developed PFAS-associated diseases). Maryland courts have recognized medical monitoring, nuisance, and trespass theories in environmental contamination cases, providing a doctrinal foundation for these claims. The specific defendants and theories depend on the facts of your exposure, which is why source identification is the foundational battle in any PFAS case.
How long do I have to file a PFAS lawsuit in Maryland?
Maryland’s general tort statute of limitations is three years from the date the cause of action accrues. Under Maryland’s discovery rule, the clock typically starts when you discover, or by reasonable diligence should have discovered, your injury and its cause — not necessarily on the date you were exposed. In a PFAS case, where contamination may have existed for years before detection, the discovery rule may mean your clock started when authorities announced the contamination in your community or when you were diagnosed with a PFAS-associated condition. However, if WSSC Water or any governmental entity is named as a defendant, the Maryland Local Government Tort Claims Act requires notice — typically within one year — which is a separate and shorter deadline. Confirm the current deadline for your specific situation with an attorney in Maryland before relying on any time frame.
What diseases are linked to PFAS exposure?
The C8 Science Panel — an independent group of court-appointed epidemiologists — found “probable links” between PFOA and six conditions: kidney cancer, testicular cancer, high cholesterol, thyroid disease, pregnancy-induced hypertension, and ulcerative colitis. The International Agency for Research on Cancer classified PFOA as a Group 1 carcinogen (carcinogenic to humans) and PFOS as Group 2B (possibly carcinogenic to humans). PFAS are also associated with immune system effects, liver changes, and decreased vaccine response. More recent scientific reviews have characterized some of the cancer evidence as “supportive but not definitive,” and the science continues to evolve. Never assume a specific diagnosis was caused by PFAS without completed expert causation analysis — the legal process is the mechanism through which that determination is rigorously and reliably made.
How do I know if my water has PFAS?
If you are on the WSSC Water public system in Gaithersburg, the contamination has been announced by authorities. You should request the specific testing results from WSSC Water — which chemicals were found, at what levels, and over what time period. If you are on a private well, you need to have your water independently tested for PFAS by a certified laboratory. Well water conditions change over time, so a single test may not reflect historical contamination levels. Sequential testing — multiple rounds over time — provides a more complete picture. The EPA’s legal limit for PFOA and PFOS in drinking water is 4.0 parts per trillion, with the health-based goal set at zero. Any detectable level means the contamination is present.
Should I get my blood tested for PFAS?
Yes — and the sooner the better. Blood serum PFAS testing measures the actual amount of PFAS in your body. This is the biological evidence that connects you, specifically, to the contamination. Serum PFAS levels reflect relatively recent exposure and decline over time once exposure stops. Testing while contamination is documented and ongoing captures your peak body burden. If you wait, your levels may decline, understating your historical exposure and making it harder to connect any future disease to the contamination. Contact your physician or a laboratory that performs PFAS biomonitoring. Preserve every test result.
Can I still sue if the EPA rolls back PFAS standards?
Yes. The EPA’s proposed rollback of drinking water standards for certain PFAS chemicals (PFHxS, PFNA, GenX, and PFBS) does not eliminate your legal claims. First, the rollback is proposed, not final, as of June 2026. Second, the PFOA and PFOS limits — which the EPA has committed to keeping — remain in force. Third, the rollback changes the regulatory paperwork, not the science. The IARC classification of PFOA as a Group 1 carcinogen did not change. The C8 Science Panel findings did not change. The CERCLA designation of PFOA and PFOS as hazardous substances remains in force. The legal theories that do not depend on the specific drinking water limits — strict products liability, negligence, nuisance, trespass, medical monitoring — are unaffected by the rollback. Even where a specific tap-water limit is being revisited, these compounds remain federally tracked as hazardous. The chemistry that makes them dangerous did not change when the paperwork did.
What if I am on a private well?
Private well owners face a distinct set of challenges. Your water is not regulated by the Safe Drinking Water Act, which applies to public water systems. You are responsible for testing your own water. But the legal claims are the same — if PFAS from a nearby facility, biosolids application, or other source has contaminated your well, the responsible parties can be held liable under the same theories: trespass (PFAS physically invaded your property and well without your consent), private nuisance (contamination unreasonably interferes with your use and enjoyment of your property), negligence, and strict products liability against the chemical manufacturers. Your well water testing results are critical evidence — preserve every result, and test sequentially to establish the temporal pattern of contamination.
How much is a PFAS case worth?
The value of a PFAS case depends on its specific facts: the level and duration of your exposure, whether you have a manifested disease, the size of the exposed population, and the identity and solvency of the responsible parties. For a mass contamination event in a densely populated area like Montgomery County, where the exposed population could number in the tens of thousands, the case value range is extraordinarily wide. Medical monitoring alone for a large class can drive seven-to-eight-figure exposure. Individual personal injury claims with manifested PFAS-associated cancers regularly exceed seven figures. Maryland has no damages cap in toxic tort cases, so the full measure of compensatory and punitive damages is available. For context, national PFAS settlements have reached into the billions — 3M’s approximately $10.3 billion settlement with public water systems, and DuPont/Chemours/Corteva’s approximately $1.185 billion settlement — though those resolved water-system claims, not individual personal-injury claims. Past results depend on the facts of each case and do not guarantee future outcomes.
Does Maryland’s contributory negligence bar my claim?
Maryland is one of the few remaining pure contributory negligence states, meaning any fault on the plaintiff can bar recovery entirely. However, this doctrine has limited application to residents who unknowingly consumed contaminated water they had no reason to suspect was unsafe. You did not choose to drink PFAS. You did not know it was there. The defense will look for any way to assign you a share of fault, and in a contributory negligence state, even a small percentage can be a complete bar — which is why the theory of your case, the quality of your evidence, and the skill of your legal team matter from the first day. This is not a reason to give up. It is a reason to build the case right.
What if a family member died from a PFAS-related cancer?
If a family member has died from a disease that may be linked to PFAS exposure — kidney cancer, testicular cancer, or another PFAS-associated condition — Maryland’s wrongful death statute preserves the family’s right to recover. A survival action preserves the estate’s claim for the decedent’s pain and suffering between injury and death. Wrongful death beneficiaries — typically the spouse, children, and parents — are entitled to separate recovery. The statute of limitations for wrongful death in Maryland is three years from the date of death, which may be different from the date of discovery of the PFAS contamination. If you have lost a family member to a disease you believe is connected to PFAS exposure, the time to act is now — both for the legal deadline and for the preservation of evidence that connects the disease to the exposure.
Why Attorney911
We are Attorney911 — The Manginello Law Firm, PLLC. We are Legal Emergency Lawyers. We take toxic tort cases, and we handle them the way they need to be handled: with the evidence frozen on day one, the experts assembled early, and the defendants mapped before the first filing.
Ralph Manginello is our Managing Partner. He has been licensed and practicing law for 27+ years, including in federal court. He was a journalist before he was a lawyer — he knows how to find the story the documents tell, and he knows how to tell it to a jury. He handles the cases other firms find too complex, too scientific, too slow. PFAS contamination is exactly that kind of case.
Lupe Peña is our associate attorney. He spent years inside a national insurance-defense firm — the rooms where adjusters and their software decided how to deny, delay, and devalue claims from people exactly like you. He knows how claims are valued from the inside. He knows the plays the other side runs. And now he sits on your side of the table. He is fluent in Spanish and conducts full client consultations in Spanish without an interpreter.
We work on contingency. That means we do not get paid unless we win your case. The fee is 33.33% before trial and 40% if the case goes to trial. Your first consultation is free. We have live staff available 24 hours a day, 7 days a week — not an answering service, real people who can take your call at 2 a.m. when you are standing in your kitchen wondering if the water is safe.
We have recovered more than $50 million for our clients over more than two decades of practice. Past results depend on the facts of each case and do not guarantee future outcomes. But the architecture of a strong case — the preservation letter on day one, the records demand in week one, the experts assembled early, the defendants mapped before the first filing — that architecture does not change because the chemical is new. The medicine, the corporate-accountability fight, the catastrophic-injury and wrongful-death work — these are things we know how to do.
This page is legal information, not legal advice. Every case is different. Contacting us is free and confidential. If we are not the right fit for your case, we will tell you.
But if you are standing in your kitchen in Gaithersburg, looking at the faucet, wondering what “forever chemicals” means for your family — call us. The evidence is disappearing on its own schedule. The legal clocks are running. And the companies that put these chemicals into your water have lawyers who are already working to minimize what they owe you.
You should have someone working, too.
1-888-ATTY-911. Free consultation. No fee unless we win.
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