PFAS are man-made chemicals built to resist heat, oil, and water, and they break down so slowly they are called forever chemicals.
The EPA says they are now found in the blood of people and animals worldwide and in water, air, fish, and soil. Health research is still developing, with certain exposures linked to effects like increased cholesterol and immune and developmental impacts. Practical steps: check your supplier's annual report for PFAS results, and use a certified reverse osmosis or carbon filter at the drinking tap if levels concern you. Bottled water is not automatically PFAS-free.
What to do
Common questions
What is PFAS in drinking water?
PFAS are a large family of man-made chemicals used for decades in nonstick coatings, stain repellents, firefighting foam, and countless products because they resist heat, oil, and water. The problem is the same as the feature: they break down very slowly, which is why they are called forever chemicals, and the EPA says that because of their widespread use and persistence, many PFAS are found in the blood of people and animals all over the world and in water, air, fish, and soil. Health research is ongoing; the EPA describes current understanding of risks as a work in progress, with studies linking certain PFAS exposures to effects like increased cholesterol and impacts on immunity and development. What you can actually do: read your water supplier's annual report, since many now test for PFAS; if levels are a concern, home filters certified for PFAS, typically reverse osmosis or specific activated carbon systems, reduce them meaningfully; and bottled water is not automatically cleaner, since it is not necessarily PFAS-tested. Regulators are tightening limits, so if your utility reports high PFAS, they will be working on treatment changes, and in the meantime a certified filter at the drinking tap is the practical personal move.