This page is for public water systems required to comply with the drinking water Per- and Polyfluoroalkyl Substances (PFAS) Rule. We will continue to add forms and guidance below to assist water systems with complying with the PFAS Rule requirements.
Please visit our Chemicals from firefighting foam and other sources page for additional consumer information on PFAS in the environment and how you can reduce your exposure.
On April 26, 2024, the Environmental Protection Agency (EPA) finalized the PFAS National Primary Drinking Water Regulation to reduce PFAS exposure in drinking water. The rule sets levels for six (6) PFAS chemicals in drinking water to protect people's health. The rule applies to community and non-transient, non-community water systems.
Additional Information
Guidance
- PFAS Rule Initial Monitoring Requirements
- PFAS Rule Initial Monitoring Compliance Check Worksheet (Excel Version)
Data
Monitoring results collected on or after January 1, 2019 may be used to help meet initial monitoring requirements, due by April 26, 2027. As part of the PFAS Grant Program, CDPHE through its contractor collected PFAS monitoring data at some public water systems that can satisfy part of the initial monitoring requirements. Below is a table of all PFAS monitoring results from the PFAS Grant Program in CSV file format. To submit data for compliance, the public water system must download their data, review the sample results for completeness and accuracy, and submit the CSV file to the Drinking Water Portal. Please note, only monitoring results at current entry points that reflect currently used sources will be accepted for compliance for initial monitoring requirement purposes.
Systems that have previously collected PFAS data from other sampling events, not included in the table below, may submit the data in CSV file format to the Drinking Water Portal using the CSV Form and Instructions.