Finding PFAS in your water report can feel alarming. The good news: you already know about it, and you can choose a certified PFAS filter and confirm your exposure by ZIP code as concrete first steps to reduce your exposure. Millions of Americans drink PFAS-contaminated water every day without knowing it, so the fact that you are reading this puts you ahead.
PFAS (per- and polyfluoroalkyl substances) are a group of over 15,000 synthetic chemicals that do not break down in the environment. They are sometimes called "forever chemicals." The EPA finalized legally enforceable limits for six PFAS compounds in April 2024, with compliance deadlines for water utilities starting in 2029. The two most studied compounds, PFOA and PFOS, now have individual Maximum Contaminant Levels (MCLs) of 4 parts per trillion (ppt). PFHxS, PFNA and HFPO-DA (GenX) are limited to 10 ppt each, and a hazard index covers mixtures of those three plus PFBS. In May 2026, the EPA proposed rescinding those four limits and letting systems extend the PFOA/PFOS deadline to 2031.
These are extremely low thresholds. For context, one part per trillion is roughly equivalent to a single drop of water in 20 Olympic swimming pools. Once the compliance deadline arrives, a utility whose running annual average exceeds these limits is required to take action. But even levels below the MCL may warrant personal precautions.
Your water utility's Consumer Confidence Report (CCR) will list detected contaminants alongside their measured concentrations. Look for entries labeled PFOA, PFOS, PFNA, PFHxS, HFPO-DA, or PFBS. The report may show a range (minimum to maximum detected) and an average.
Key things to check:
If the report shows "ND" (not detected), that means PFAS levels were below the laboratory's reporting limit, typically 2 to 5 ppt (EPA's UCMR 5 national survey used 4 ppt for PFOA and PFOS). This is encouraging but does not guarantee zero PFAS.
Check your water quality to see reported PFAS levels for your zip code.
Your utility's report reflects water quality at the treatment plant or distribution system sampling points. By the time water reaches your tap, conditions may differ. If you want to know exactly what is coming out of your faucet, consider independent testing.
When collecting a sample, run your cold water tap for two minutes before filling the provided container. Do not use containers with nonstick coatings or waterproof linings, as these can contain PFAS and contaminate the sample.
Not all water filters remove PFAS. Standard carbon pitchers and basic faucet attachments may reduce some PFAS but are generally not certified for reliable removal. Here is what the science supports:
For renters or those who cannot install under-sink systems, certified pitcher filters (such as ZeroWater or PUR PLUS pitchers, which are certified to NSF/ANSI 53 for PFAS reduction) are a practical alternative.
Food and drinking water are the main routes of PFAS exposure, and in communities with contaminated supplies, water can be the largest source (ATSDR). It is not the only one. While you address your water supply, consider these additional steps:
PFAS contamination is not a one-time problem. Sources can shift, treatment methods can change, and new compounds are discovered regularly.
Check your water quality to see the latest reported data for your area and track changes over time.
A PFAS detection on your water report is a call to action, not a reason to panic. The steps are straightforward: understand the numbers, test your own water if you want precision, install a certified filter, reduce other exposure sources, and monitor over time. The EPA's new enforceable limits mean utilities are now required to address contamination, but personal filtration gives you an additional layer of protection right now.
Check your water now. Enter your zip code at KnowYourExposure.com to see what contaminants have been detected in your local water supply, including PFAS, lead, and other regulated compounds.