If you own property, operate a business, or manage a manufacturing site, you need to understand the legal liability surrounding PFAS chemicals. Per- and polyfluoroalkyl substances, often called forever chemicals, are now the most significant driver of groundwater and soil contamination lawsuits in the United States. These chemicals do not break down in the environment. They move easily through soil into groundwater. Once there, they travel for miles and persist for decades. The legal consequences for anyone responsible for releasing these chemicals are severe and growing worse.
The core legal principle that governs PFAS liability is strict liability. This means you do not have to be negligent to be held responsible for contamination. If PFAS from your property ends up in groundwater beneath a neighbor’s land, or if your waste disposal practices allowed these chemicals to leach into the soil, you can be sued for the full cost of cleanup. You do not get a pass because you followed industry standards ten years ago. You do not get a pass because you were unaware the chemicals were in your products. The law places the burden on you, the operator, the owner, or the generator of the waste.
The primary federal weapon for enforcing this liability is the Comprehensive Environmental Response, Compensation, and Liability Act, commonly called CERCLA or Superfund. Under this law, the Environmental Protection Agency can order you to investigate and clean up contaminated soil and groundwater. The EPA can also sue you directly for all cleanup costs the government incurs. Worse, this liability is joint and several. That phrase simply means the government can come after you for the entire cleanup bill, even if you only contributed a small percentage of the total contamination. If your neighbor is bankrupt and the other polluter cannot be found, you pay the whole thing. Then you have to sue the other parties yourself to try to recover their share. That process is expensive and uncertain.
State laws add another layer of risk. Many states have their own versions of Superfund law. Some of these state laws are even more aggressive than federal law. They can impose liability for natural resource damages, which means you could be forced to pay not only for cleaning up the water but also for restoring the ecological value of the land and water you damaged. Some states now require property owners to test for PFAS even if they never used these chemicals, simply because contamination may have migrated from an uphill neighbor. If you buy that property, you become responsible for a problem you did not create.
The lawsuits are not limited to government actions. Private plaintiffs are flooding courts with claims. Residents have sued companies whose factories contaminated their drinking water wells. Farmers have sued when PFAS-laden sludge spread on their fields destroyed the market for their cattle. Individuals who developed cancer after years of drinking contaminated water have won large verdicts. These cases rely on theories of trespass, nuisance, and negligence. The evidence is usually straightforward. If a laboratory test shows PFAS in your groundwater and the chemicals can be traced back to your site, a jury will likely find you responsible.
What does this mean for you in practical terms? If you own a landfill, a metal plating shop, a textile mill, or a fire training facility where foam was used, you are a primary target. Your insurance policies from several decades ago may or may not cover these claims. Many policies from the 1970s and 1980s did not exclude PFAS specifically, which has led to massive litigation between policyholders and insurers. Do not assume your current general liability policy covers environmental cleanup. Most standard commercial policies exclude pollution liability unless you have purchased a specific endorsement or a standalone environmental insurance policy.
If you are a buyer of commercial or industrial property, do not close the deal without testing for PFAS. A standard Phase I environmental site assessment usually does not include PFAS testing. You must explicitly request it. If contamination is found, you have leverage to negotiate a discount, a holdback, or a requirement that the seller clean the property before you take ownership. Buying a property without this knowledge is gambling with your entire investment.
The takeaway is brutal but simple. PFAS liability is strict, it is retroactive, and it is expensive. The government can force you to clean up contamination that was legal when it happened. Neighbors can sue you for damages to their health and property. The costs of investigation, litigation, and remediation can run into the millions of dollars. You cannot ignore this issue and hope it goes away. It will not. The only smart move is to understand where you stand, test your property, review your insurance, and get legal advice before a problem becomes a lawsuit.
