More than 200 million Americans have forever chemicals in their tap water. These synthetic chemicals do not break down. They accumulate in your body over a lifetime. ForeverChemicalsFacts.com is a free, independent resource that tells you what is known, where contamination is documented, and what you can do about it.

PFAS — per- and polyfluoroalkyl substances — are a family of more than 12,000 synthetic chemicals that share one characteristic: a carbon-fluorine bond so strong that no natural process breaks it down. Not sunlight. Not soil bacteria. Not your body’s metabolism. That is why they are called forever chemicals.

They were developed starting in the 1940s for their useful properties — heat resistance, water repellency, friction reduction. They went into non-stick cookware, firefighting foam, food packaging, stain-resistant fabrics, and hundreds of other products. For decades, manufacturers knew about accumulation in human blood and kept it from regulators and the public.

Within that family, chemicals are divided into subgroups based on their molecular structure. PFOS, used in firefighting foam and Scotchgard, belongs to the perfluoroalkyl sulfonic acids (PFSAs). PFOA, central to Teflon production, belongs to the perfluoroalkyl carboxylic acids (PFCAs). Different chemistry, same persistence problem.”

Today, PFAS are everywhere. In the blood of virtually every American tested. In drinking water systems from Maine to California. In fish from contaminated waterways. In the soil surrounding military bases and industrial plants. The science on health effects is clear enough to have prompted the EPA to set the first-ever national drinking water standards for PFAS in April 2024.

ForeverChemicalsFacts.com covers forever chemicals and PFAS from every angle — the science, the health effects, the contamination sources, the law, and the practical steps you can take. Choose the topic most relevant to your situation.

The EPA has classified PFOA as a human carcinogen and set a maximum contaminant goal of zero for both PFOA and PFOS — meaning the agency has determined there is no level at which exposure carries no risk. The enforceable limit of 4 parts per trillion is the lowest technically achievable, not a declaration of safety below that threshold.

Forever Chemicals and PFAS regulation are moving fast. These are the most significant developments as of early 2026.

ForeverChemicalsFacts.com is an independent consumer resource on Forever Chemicals and PFAS contamination. We do not represent manufacturers, utilities, government agencies, or law firms. Our goal is to make accurate, well-sourced information accessible to people who need it — without jargon, without agenda, and without a paywall.

Content is sourced from EPA, ATSDR, EWG, peer-reviewed research, and court records. We update pages when significant regulatory or legal developments occur regarding forever chemicals. Some links on this site are affiliate links — we earn a small commission if you purchase through them, at no cost to you. We only recommend products with verified third-party certifications. See our About page for more.