PFAS Mapping

This map shows results from multiple sampling projects where water, soil, sediment, and fish have been sampled for PFAS in Colorado.

  • This map shows sampling supported or required by CDPHE and does not include all sampling efforts by outside entities.
  • Not all points on the map are places where PFAS are being released into the environment. Some facilities may be containing and properly disposing of PFAS releases.
  • The map includes PFOA, PFOS, PFBS and GenX chemicals. The EPA released new or updated health advisories for these four PFAS in June 2022.
  • Samples that were below the limit of detection are labeled as zero, though their true value may be somewhere in between zero and the detection limit.
  • Users can find more information about the data from each project in the map’s layer descriptions.
  • This map will be updated as more information becomes available.

We currently are working to identify areas potentially at greater risk of PFAS contamination. This effort will take population characteristics, known and potential chemical sources, and geography into account. It also will consider burdens on disproportionately impacted communities. This project will help us determine where we should prioritize PFAS sampling.

Ask questions. Share your PFAS data.