Chemicals from firefighting foam and other sources

Coloradans face an emerging public health challenge from a family of chemicals found in toxic firefighting foam and other sources. The chemicals are known scientifically as per- and polyfluoroalkyl substances, or PFAS, and have been used for decades in many consumer products and industrial processes to repel oil and water, resist heat, and reduce friction.
We are still learning about health effects from exposure to these chemicals, but studies have found serious potential impacts including pregnancy complications, developmental delays in children, and increased cholesterol. Learn more about these chemicals and the department’s actions to reduce exposure below. 

Action Plan
Read about how the state is working to protect Coloradans from risks posed by PFAS chemicals
2020 Discharge Permits Survey
Required survey of permitted dischargers regarding use and storage of certain products containing PFAS, including Class B firefighting foam
2020 Sampling Project
See test results for all of the public water systems and fire districts that participated in the 2020 PFAS sampling project.
Your Health
What you need to know about health effects from exposure to these chemicals and the EPA's health advisory for some PFAS compounds
Drinking water
Information about PFAS in drinking water, what the state is doing to protect our drinking water, and how to treat PFAS contaminated water at home
Certificate of Registration and Colorado laws
Anyone using or storing firefighting foam containing PFAS must register through the Certificate of Registration Program. The state legislature passed several PFAS bills since 2019
Colorado specific information
PFAS contamination in Colorado and the state’s responses to protect public health
Narrative policy work group
Documents and information related to our work with stakeholders to develop Colorado’s PFAS narrative water quality policy to protect public health from PFAS contamination
Toxic firefighting foam
Frequently asked questions and resources about PFAS-containing firefighting foam as well as the state’s triennial PFAS-containing firefighting foam survey
Resources and contacts
Printable fact sheets, documents, links, contacts, and other PFAS related information

Email notification

Sign-up to receive email notifications about the department's actions to reduce PFAS exposure and other areas of interest.

Report PFAS contamination

If you know of or suspect PFAS contamination or would like to give feedback on the department's efforts to reduce exposure to PFAS, please email