MADISON, Wis. (AP) — Marshfield and Adams joined the list of Wisconsin cities that have shut down municipal wells due to PFAS contamination.

Wisconsin Public Radio reported that the state Department of Natural Resources announced Thursday that sampling in the two cities detected PFAS high enough to cause concern for state health officials.

Marshfield closed four of 15 wells after receiving results on Tuesday. Adams shut down one of two wells with elevated PFAS levels after receiving the results on May 4.

Communities such as La Crosse, Eau Claire and Madison have also shut down wells due to PFAS contamination. The DNR is investigating PFAS contamination at nearly 100 sites across the state.

The DNR board approved surface water and potable water standards for PFAS in February, but did not set standards for groundwater. Surface water and potable water standards are still subject to legislative approval. The Legislative Assembly Rules Committee has requested a meeting with MNR officials to discuss the standards. This meeting could take place as early as next month.

PFAS is an acronym for perfluoroalkyl and polyfluoroalkyl chemicals that do not break down in nature. The chemicals are found in fire-fighting foam and in a wide range of everyday products such as kitchen utensils and clothing.

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