Should you test PFAS-contaminated water used for drinking and cooking?
Yes. Do not rely on water with known or suspected PFAS contamination for drinking or cooking without testing and treatment.
What is actually in it
PFAS are persistent chemicals that can contaminate drinking water. They can come from firefighting foam, industrial sites, landfills, wastewater, and some consumer-product waste.
Private wells need extra attention because homeowners are usually responsible for testing and treatment. If PFAS are in your drinking or cooking water, boiling does not fix the problem.
What the source says
The EPA National Primary Drinking Water Regulations set enforceable drinking water limits for selected PFAS.
EPA lists PFOA and PFOS with maximum contaminant levels of 0.0000040 mg/L, which equals 4 parts per trillion. EPA also lists potential long-term health effects for PFAS above the limits, including cardiovascular, immune, liver, developmental, and cancer concerns depending on the compound.
What to do instead
Test well water through a certified lab if PFAS contamination is possible near you. Use a treatment system rated for PFAS, such as reverse osmosis or activated carbon, and maintain it on schedule. Use glass or stainless steel for storing treated water.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| National Primary Drinking Water Regulations | EPA | 2026 |