Two former firefighter training areas in Madison, Wis. are the sites of high PFAS levels.
Testing completed by an environmental contractor at the Dane County Regional Airport discovered groundwater containing 68,000 parts per trillion in water of PFOA and PFOS. Wisconsin’s Department of Health indicates a safe drinking water standard of 20 ppt, while the EPA recommends 70 ppt.
The contaminated airport grounds, managed by the city of Madison and the Wisconsin Air National Guard, was previously the site of "burn pits" for firefighter training between the 1950s and 1980s.
Read more about what this means for the city of Madison at the original article.