Lake Noquebay Samples Low to Non-Detect for PFAS*

DNR reports results of surface water tests near fields with biosolids.

In November 2022, the Wisconsin Department of Natural Resources (DNR) collected six surface water samples from Lake Noquebay, near Crivitz, Wisconsin, to evaluate the current per- and polyfluoroalkyl substances (PFAS) concentrations in the lake. The concentrations were less than 1 parts per trillion (ppt) for perfluorooctanoic acid (PFOA) and less than 0.2 ppt for perfluorooctane sulfonate (PFOS), which are below Wisconsin surface water standards. The full results are available on the DNR’s PFAS Data Viewer; click on the sampling points in Lake Noquebay to access a file of the data.

JCI/Tyco is responsible for completing a site investigation to evaluate PFAS in and around fields where biosolids from the city of Marinette were previously landspread. Lake Noquebay is in proximity to several of these fields.

For additional information about the ongoing investigation, please visit the DNR’s webpage, PFAS Contamination in the Marinette and Peshtigo Area.

*Notified of error in headline and corrected 1/30