County · Wisconsin
Pierce County, Wisconsin: drinking water records
This overview covers 10 ZIP codes and 11 community water systems in Pierce County. It also stands in for 1 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| River Falls Waterworks WI6480246 | 16,000 | 300 | 0 | 1 | 0.9 ppb |
| Prescott Waterworks WI6480243 | 4,258 | 120 | 6 | 1 | 1.9 ppb |
| Ellsworth Waterworks WI6480239 | 3,304 | 180 | 1 | 1 | 2.4 ppb |
| Maiden Rock Water Utility WI6480240 | 118 | 0 | 0 | 1 | 0.4 ppb |
| Spring Valley Waterworks WI6480249 | 1,409 | 0 | 0 | 0 | 0 ppb |
| Elmwood Waterworks WI6480250 | 798 | 0 | 0 | 0 | 2.3 ppb |
| Bay City Waterworks WI6480153 | 499 | 0 | 0 | 0 | 2.1 ppb |
| St Croix Improvements WI6480244 | 175 | 0 | 0 | 0 | 0.9 ppb |
| Plum City Care Center Nursing Home WI6480372 | 120 | 0 | 0 | 0 | 3.4 ppb |
| Country Manor Apts WI6480403 | 50 | 0 | 0 | 0 | 2.2 ppb |
| Prairie View Senior Living WI6480345 | 31 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Pierce County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 54003.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.