The Wisconsin DNR announced last week it will continue to sample drinking water wells in an Expanded Site Investigation Area in the Town of Peshtigo due to the potential presence of groundwater contaminated with PFAS. The DNR will use state funds for the sampling effort, which is scheduled to begin this spring.

The DNR is mailing information to more than 200 property owners in the Town of Peshtigo who have not yet opted to have their well sampled by the DNR.

The DNR, which initially began sampling in the area in the fall of 2020, will also contact and make arrangements with well owners who opted for well testing in the fall of 2020 but have not yet had their well sampled.

Christine Haag, DNR Remediation and Redevelopment Program Director says “While property owners are not required to have their potable well tested, the DNR recommends that residents take advantage of these free tests to learn about potential PFAS in their drinking water.”

To begin scheduling the next well sampling events, the DNR requests that residents return signed access agreements by April 2, 2021, at the latest. There is no cost to the well owner for the sampling.

In addition to testing new wells, the DNR also plans to conduct confirmation sampling of some previously sampled wells.

Potable well owners in the expanded site investigation area with exceedances of any DHS Cycle 10 or Cycle 11 recommended groundwater standards may be eligible for a temporary bottled water supply provided by the DNR or any identified responsible party.

PFAS contamination was detected in Marinette, Peshtigo and surrounding communities in soil, sediment, groundwater, surface water, private drinking water wells and biosolids. Under the DNR’s oversight, Johnson Controls Inc. and Tyco Fire Products, LP(JCI/Tyco) were identified as responsible parties. The DNR directed them to conduct investigations into areas impacted by PFAS contamination in the Marinette and Peshtigo area due to company operations. Tyco has done sampling in the area where they believe the PFAS attributable to their operations have spread.

The DNR says they are sampling potable wells in the Expanded Site Investigation Area because JCI/Tyco declined to perform the sampling within the area required by Wisconsin law.