Skip to main content
State of Wisconsin flag

Official website of the State of Wisconsin

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.


Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

We have refreshed our website: Tell us what you think

Use the "Site Feedback" link found at the bottom of every webpage. We look forward to hearing from you!

  • Chemicals: Perfluoroalkyl and Polyfluoroalkyl (PFAS) Substances

    … Learn what you need to know about perfluoroalkyl and polyfluoroalkyl substances. Also known as: PFAS There are thousands of types of PFAS. The most common types are PFOA (perfluorooctanoic acid) and PFOS (perfluorooctanoic …
    • Updated on October 10, 2022.
  • Eat Fish Safely: Recommendations

    … (PFOS) is a chemical in a group of contaminants called per- and polyfluoroalkyl substances (PFAS). Because of its chemical properties, PFOS has been used in many industry and consumer … low PFOS levels according to state advisories . For more information on PFOS: DHS webpage on PFAS DNR webpage on PFAS Agency for Toxic Substances and Disease Registry fact sheet on PFAS Cooking fish According …
    • Updated on November 22, 2022.
  • Drinking Water Concerns

    … You can learn more about the health effects of nitrate on our Nitrate in Private Wells page . PFAS Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are a class of manmade chemicals. Some PFAS have been found in certain public water systems and private wells in Wisconsin . We are …
    • Updated on January 12, 2023.
  • Groundwater Standard Recommendations (Cycle 10)

    … DHS continues to support the recommended groundwater standards for PFAS and other hazardous substances. On February 23, 2022, the Natural Resources Board did not … on addressing total coliform bacteria in private wells. Per- and Polyfluoroalkyl Substances (PFAS) Perfluorooctane sulfonamide (PFOA) Perfluorooctane sulfonamide (PFOA) is a type of per- and polyfluoroalkyl substances (PFAS). PFAS have been used in many products since the 1950s including food packaging, …
    • Updated on July 08, 2022.
  • Recommended Groundwater Standards (Cycle 11)

    … perfluorohexadecanoic acid (PFHxDA); and perfluorononane sulfonic acid (PFNS). Resources Our PFAS webpage has information on sources and health effects of PFAS. The Agency for Toxic Substances and Disease Registry (ATSDR) has fact sheets  on health …
    • Updated on March 15, 2021.
  • Eat Fish Safely: Projects

    … National Program Office. An analysis from the same group examined perfluoroalkyl substances’ (PFAS) levels and factors associated with exposure, as well as associations between PFAS levels and self-reported health outcomes with high fish consumption. PFAS were associated mainly with endocrine related outcomes, such as pre-diabetes and diabetes, …
    • Updated on November 22, 2022.
  • Chemical List

    … N-Z Naphthalene Nitrate Nitrogen Dioxide Perfluoroalkyl and Polyfluoroalkyl Substances (PFAS) Pesticides Polychlorinated Biphenyls (PCBs) Polycyclic Aromatic Hydrocarbons (PAHs) Sodium …
    • Updated on June 16, 2022.
Last revised February 7, 2023