Zoom in and click on markers to interact with the map.
Toxic Fluorinated Chemicals in Tap Water and at Industrial or Military Sites

Download EWG's Guide to Avoiding PFCs

Optional Member Code

You will also be subscribed to receive emails from EWG including environmental tips, action alerts, promotions to support our work and more. You may opt-out at any time.

No Thanks

Share this page

Share Share Share Share Share on Social Media

About the Map

For all public water systems tested under the Unregulated Contaminant Monitoring Rule that had one or more detection of PFOS, PFOA or another contaminant, an average was calculated using the all samples collected. Samples with no detections were treated as zero when calculating the average, which in turn may skew the value lower when the contaminant is more common.

All locations represented on the map are approximate, and meant to visualize the general area of a contamination site or public water detection. Locations were mapped using the best available data preserved in official records.

Search by Zip Code

Please type below a 5-digit Zip Code, then click on "SEARCH"