Interactive PFAS Data Tool Available

The Wisconsin Department of Natural Resources (DNR) has created the PFAS Interactive Data Viewer: a new, interactive tool with information about per- and polyfluoroalkyl substances (PFAS) throughout the state. 

The tool combines publicly available information from multiple sources on the DNR’s website into one tool to allow users to more easily explore locations with known contamination, PFAS-related fish and game consumption advisories, and waterbodies throughout Wisconsin that have been sampled during targeted or routine monitoring.

Also included are data from the DNR’s recent, voluntary municipal drinking-water system sampling program, through which almost 150 municipal water systems – which provide water to more than 1.7 million people – worked with the DNR to determine whether PFAS is present in their drinking water. 

Under standards for PFOA and PFOS that went into effect in August, all drinking-water systems will now be required to sample and monitor for PFAS beginning as early as next month. Data from the required sampling will be incorporated into this new tool as it becomes available.

Learn more and access the viewer at