PFAS in Your Water by Zip Code: How to Check

Start with your water utility's annual water quality report, then check EPA's public PFAS monitoring data for your water system. If you are on a private well, send a sample to a certified lab. There is no single lookup by zip code that is always right, because water systems and zip codes do not line up neatly, but these steps get you to a real answer.

PFAS in Your Water by Zip Code: How to Check

• •Find your water provider. Look at your water bill, or ask the utility who supplies your address.
• •Open the latest Consumer Confidence Report (CCR). Utilities must publish one every year, and many post it online. Search it for PFAS, PFOA, and PFOS.
• •Check EPA's public PFAS monitoring results. EPA publishes testing data from public water systems. Search by system name or state at epa.gov.
• •If you have a private well, use a certified lab. Public water rules do not cover private wells, so testing is on you.

What EPA's Limits Say

In 2024, EPA set enforceable limits for PFOA and PFOS in public drinking water at 4 parts per trillion (ppt). Limits for some other PFAS were also set. In 2025, EPA announced that it would keep the PFOA and PFOS limits and extend the compliance deadline to 2031, and has proposed rescinding the limits for other PFAS. Because this is a proposal, details may change. Check EPA's PFAS page for the current rules.

If You Cannot Find Results

Not every utility has published PFAS results yet. Call them and ask whether they have tested for PFAS and what the results were. If there are no results, an in-home test of your tap water gives you a starting point, and a certified lab test is the next step for a firm number.

Reducing PFAS at Home

RainSoft's Ultrefiner Elite is a reverse osmosis system installed under your kitchen sink. It is tested and certified to reduce PFAS, along with lead, microplastics, and chlorine. It treats the water you drink and cook with. Learn more on our PFAS page (/pfas-water-contamination) and in our guide to PFAS forever chemicals.

Start with the free in-home water test. We test your tap water, explain the results, and tell you whether a drinking-water system makes sense for you.