23 chemical companies sued for PFAS contamination support state political candidates. By Wisconsin Democracy Campaign - Mar 9th, 2021 03:47 pm //end headline wrapper ?> Get a daily rundown of the top stories on Urban Milwaukee Foam present in Starkweather Creek in 2019 shows elevated levels of PFOS and PFOA (PFAS chemicals). File photo courtesy of the DNR. Employees from a handful of 23 chemical companies sued by the City of La Crosse for PFAS contamination have contributed nearly $72,000 since 2015 to Wisconsin legislative and statewide candidates. The lawsuit, like many others filed by local governments, citizens, and firefighters in recent years, claimed PFAS have contaminated public and private wells and that chemical makers have known of the dangers of PFAS for decades but kept them secret from users.