Please contact the Site Lead for the most up-to-date status of this site.
These plants receive residential, commercial, and sometimes industrial wastewater that may contain PFAS. Conventional wastewater treatment plants are not designed to treat for PFAS, therefore PFAS may pass through the treatment system to surface waters (i.e., lakes, rivers, etc.) and groundwater. EGLE is actively working with these wastewater treatment plants to address PFAS.
For more information, please see the Wastewater Workgroup page.
Kevin Wojciechowski, WojciechowskiK@Michigan.gov, 586-623-2948.
The Caledonia Wastewater Treatment Plant (WWTP), located at 8701 Cherry Valley Road, discharges treated wastewater to the groundwater under a state Groundwater Discharge Permit issued to the village of Caledonia. Treatment consists of sequencing batch reactors and a polishing pond. The treated wastewater is discharged to the groundwater via rapid infiltration basins.
As part of a statewide sampling effort in Fall 2021, EGLE sampled the influent, effluent, final treated solids and three groundwater monitoring wells for PFAS at the WWTP.
Estimated groundwater flow is to the northeast.
Content posted July 2022.
EGLE, the Michigan Department of Health and Human Services (MDHHS), and the Kent County Health Department are working to identify nearby residential wells and determine if sampling for PFAS is needed.
EGLE will continue to work with the village of Caledonia to determine the extent of PFAS contamination in groundwater on-site as well as identify and reduce, or eliminate potential sources of PFAS to the WWTP. EGLE, MDHHS, and the Kent County Health Department are working to identify nearby residential wells and determine if sampling for PFAS is needed.
|
Type of Sample |
Date Sampled |
Number of Sample Results Received |
Number of Samples above Criteria* |
|---|---|---|---|
|
Groundwater Monitoring Wells |
October 18, 2021 |
3 |
1 |
* Residential well and groundwater monitoring well results are compared to EGLE Part 201 criteria for 7 PFAS compounds effective 12/21/2020: PFOS (16 ppt), PFOA (8 ppt), PFNA (6 ppt), PFHxS (51 ppt), PFHxA (400,000 ppt), PFBS (420 ppt), and HFPO-DA (370 ppt).
