The Wisconsin Department of Natural Resources is rejecting an idea from Johnson Controls International that the agency rather than the company would oversee the first phase of investigation into PFAS contamination on farm fields in northeastern Wisconsin.
The investigation stems from contamination as a result of chemicals in firefighting foam known as per-and polyfluoroalkyl substances or PFAS. The chemicals have been linked to adverse health effects in humans, including thyroid disease, developmental issues and cancer.
Tyco Fire Products, a subsidiary of Johnson Controls, has tested firefighting foam at its fire training facility in Marinette. Tyco is the largest known source of PFAS contamination in the Marinette and Peshtigo area, according to the DNR.
Johnson Controls submitted a work plan to the agency on Friday as part of the DNR’s directive to investigate contamination on farm fields in the region.