Castle Air Force Base PFAS Lawsuit [2026 Update]

Castle Air Force Base, located in Merced County, California, has been identified as a site of serious PFAS contamination stemming from decades of military operations.

Groundwater beneath and around the former base contains dangerously high levels of per- and polyfluoroalkyl substances (PFAS), which are synthetic chemicals used widely in firefighting foams and industrial processes.

These “forever chemicals” are known for their persistence in the environment and the human body, raising major concerns about long-term health and environmental risks.

According to data collected by the Environmental Working Group (EWG), PFAS levels in groundwater at Castle AFB significantly exceed the Environmental Protection Agency’s (EPA) maximum contaminant levels (MCLs), underscoring the urgent need for cleanup and accountability.

According to data collected by the Environmental Working Group (EWG), PFAS levels in groundwater at Castle Air Force Base as of 2020 are as follows:

• PFOS: 2,300 ppt
• PFOA: 340 ppt
• PFBS: 200 ppt
• PFHpA: 310 ppt
• PFHxS: 2,200 ppt
• PFHxA: 810 ppt
• PFNA: 25 ppt

These concentrations are hundreds of times higher than the EPA’s health-based guidelines of 4 parts per trillion for PFOA and PFOS, indicating widespread contamination that could pose serious threats to public health and the environment.

Sources of PFAS Contamination at Castle AFB

The primary source of PFAS contamination at Castle AFB is the historical use of aqueous film forming foam (AFFF), a firefighting foam commonly used at military installations to suppress jet fuel and chemical fires.

AFFF contains high concentrations of PFAS chemicals like PFOS and PFOA, which easily seep into soil and groundwater during training exercises and emergency responses.

Over decades of use, this foam was routinely sprayed during fire drills and accident response, resulting in long-term accumulation of toxic chemicals in and around the base.

Maintenance and waste disposal practices at the installation may have contributed to the release and migration of PFAS into local water systems.

Impacted Populations at Castle AFB

Populations most at risk of PFAS exposure at Castle AFB include former military service members, base employees, contractors, and nearby residents who may have relied on private drinking water wells or local public water systems.

Many individuals may have unknowingly consumed contaminated water for years, increasing their risk of developing serious health conditions such as thyroid disease, kidney cancer, immune system disorders, and fertility issues.

Vulnerable groups like pregnant women, children, and people with underlying health conditions face even greater health risks from long-term PFAS exposure.

The proximity of surrounding communities to the base increases the potential for widespread and sustained exposure.

Addressing PFAS Contamination at Castle AFB

Castle AFB is undergoing environmental investigation and cleanup under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), also known as Superfund.

The U.S. Department of Defense, along with the Environmental Protection Agency and state agencies, is responsible for identifying contamination sources, conducting PFAS testing, and implementing cleanup strategies.

Progress has been slow, and community advocates are calling for more aggressive action to remove PFAS from drinking water supplies and prevent future exposure.

Remediation efforts include the installation of filtration systems, monitoring of water quality, and plans to remediate contaminated soil and groundwater.

Broader Implications of PFAS Contamination at Castle AFB

The contamination at Castle Air Force Base is part of a broader national crisis involving PFAS pollution at military installations across the United States.

As more bases are found to have elevated PFAS levels, concerns continue to grow about the long-term effects on public health, the environment, and water infrastructure.

Castle AFB serves as a case study highlighting the need for federal oversight, corporate accountability, and comprehensive regulation of PFAS compounds.

Legal action, increased funding for cleanup, and stricter enforcement of contaminant levels are essential to address the lasting impact of PFAS pollution on affected communities.

PFAS, or per- and polyfluoroalkyl substances, are a class of synthetic chemicals developed in the 1940s for their resistance to heat, water, and oil.

These compounds have been widely used in a range of industrial and consumer products, including non-stick cookware, stain-resistant fabrics, food packaging, and especially in firefighting foams like Aqueous Film Forming Foam (AFFF).

What makes PFAS dangerous is their extreme persistence—earning them the name “forever chemicals”—because they do not break down in the environment or the human body.

Over time, PFAS accumulate in soil, groundwater, and living organisms, leading to long-term contamination and growing concerns about human health and environmental safety.

Why Are PFAS Chemicals Dangerous?

PFAS chemicals are dangerous because of their toxicity, persistence, and ability to accumulate in the human body and environment.

Once ingested through drinking water or food, PFAS bind to proteins in the blood and can concentrate in organs such as the liver and kidneys.

Scientific studies have shown that even low levels of PFAS exposure can cause serious health issues, and because they do not naturally degrade, these chemicals can remain in the body for years, compounding their effects.

The widespread detection of PFAS in public water systems, particularly near military sites like Castle Air Force Base, underscores their threat to public health.

Health Risks Associated With PFAS Exposure

Exposure to PFAS-contaminated water has been linked to numerous health risks, many of which can develop after long periods of exposure.

According to the Environmental Protection Agency (EPA) and other health agencies, PFAS exposure may increase the risk of:

• Kidney cancer
• Testicular cancer
• Thyroid disease and hormonal imbalances
• High cholesterol
• Immune system suppression
• Liver damage
• Fertility issues and pregnancy complications
• Developmental delays in children

Because PFAS build up in the human body over time, those who were exposed through contaminated drinking water—such as individuals living or working near Castle AFB—may face long-term health consequences that require ongoing medical monitoring.

Environmental Impact of PFAS Contamination

PFAS contamination has a lasting impact on the environment, affecting soil, groundwater, rivers, and even wildlife.

Once released, these synthetic chemicals can migrate far from their original source, making them difficult and costly to contain or remove.

PFAS pollution harms aquatic life, disrupts ecosystems, and contaminates drinking water supplies, especially in areas surrounding military installations.

Wildlife exposed to PFAS have shown signs of immune dysfunction, reproductive harm, and developmental delays.

The environmental damage caused by PFAS at Castle AFB and similar military sites demands significant remediation and long-term stewardship.

The Need For Urgent Action

The presence of high PFAS levels in drinking water and groundwater near Castle Air Force Base highlights the urgent need for a coordinated and transparent response.

Despite growing evidence of the health and environmental risks, cleanup efforts have often been slow and underfunded.

Immediate steps are needed to expand PFAS testing, provide medical support for affected individuals, and implement long-term remediation strategies.

Regulatory agencies must enforce stricter limits on PFAS in water systems and hold polluters accountable to protect public health.

Without swift action, PFAS will continue to pose significant risks to communities across the country.

You may qualify for the Castle Air Force Base PFAS Lawsuit if you lived, worked, or were stationed at or near the base and were exposed to contaminated drinking water or groundwater containing elevated levels of PFAS chemicals.

Individuals who later developed health conditions such as kidney cancer, thyroid disease, immune system disorders, or reproductive problems may be eligible to seek financial compensation.

Affected populations may include military personnel, base employees, family members, and residents of surrounding communities who relied on private wells or local water systems impacted by PFAS pollution.

Eligibility is typically evaluated based on the length of time you were in the area, the extent of your PFAS exposure, and any documented medical conditions linked to toxic chemical exposure.

Because PFAS-related illnesses often develop slowly, legal action may still be possible even if symptoms appeared years after the initial exposure.

Consulting with an experienced PFAS attorney can help determine whether your circumstances meet the criteria to join the lawsuit.

Gathering Evidence for a PFAS Lawsuit

Building a successful PFAS lawsuit requires clear evidence linking your exposure to PFAS chemicals at Castle Air Force Base with the health problems you have experienced.

Key evidence may include:

• Medical records showing diagnoses of conditions linked to PFAS exposure (e.g., cancer, thyroid disorders, fertility issues).
• Proof of residence or employment near Castle AFB during the time of contamination.
• Water testing data confirming elevated PFAS levels in your private well or local drinking water supply.
• Military or personnel records demonstrating your presence at the base or nearby community.
• Blood test results showing detectable levels of PFAS in your system.

Additional support may come from EPA reports, environmental assessments, and scientific research connecting your condition to PFAS exposure.

A qualified attorney can help gather and organize this evidence to build a compelling claim on your behalf.

TorHoerman Law is actively investigating PFAS contamination claims related to Castle Air Force Base and other military installations, where testing has revealed dangerously high levels of toxic “forever chemicals” in groundwater.

These chemicals—primarily from Aqueous Film Forming Foam (AFFF) used during firefighting exercises—have been linked to serious health risks, including kidney cancer, thyroid disease, immune disorders, and reproductive issues.

Our legal team is committed to helping individuals and families who were exposed to PFAS-contaminated water pursue justice and financial compensation.

With extensive experience in environmental litigation and toxic exposure cases, TorHoerman Law is prepared to hold chemical manufacturers, military contractors, and other responsible parties accountable for the harm caused by decades of PFAS pollution at military sites like Castle AFB.

If you or a loved one lived or worked near Castle AFB and developed health problems potentially linked to PFAS exposure, you may be eligible to join a lawsuit.

Contact us today for a free, no-obligation case evaluation—we are here to help you navigate the legal process and protect your right to safe water and a healthy future.

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