County · Wisconsin
Marathon County, Wisconsin: drinking water records
This overview covers 16 ZIP codes and 23 community water systems in Marathon County. It also stands in for 3 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 |
|---|---|---|---|---|---|
| Kronenwetter Water & Sewer Utility WI7371700 | 6,931 | 120 | 0 | 1 | 0.8 ppb |
| Wausau Waterworks WI7370102 | 39,994 | 120 | 1 | 0 | 5.8 ppb |
| Weston Municipal Utilities WI7370163 | 16,000 | 420 | 8 | 0 | 0.8 ppb |
| Rib Mountain Water Utility WI7370660 | 6,398 | 240 | 7 | 0 | 2.4 ppb |
| Rothschild Waterworks WI7370161 | 3,190 | 0 | 0 | 1 | 7.3 ppb |
| Abbotsford Waterworks WI7370148 | 2,502 | 0 | 0 | 2 | 3.5 ppb |
| Schofield Waterworks WI7370162 | 2,205 | 120 | 6 | 0 | 0 ppb |
| Spencer Waterworks WI7370108 | 1,848 | 0 | 0 | 1 | 0.6 ppb |
| Marathon City Waterworks WI7370151 | 1,695 | 0 | 0 | 1 | 0.4 ppb |
| Stratford Waterworks WI7370168 | 1,643 | 0 | 0 | 1 | 3.3 ppb |
| Edgar Waterworks WI7370150 | 1,491 | 0 | 0 | 1 | 0 ppb |
| Athens Waterworks WI7370149 | 1,025 | 0 | 0 | 1 | 12 ppb |
| Maine Water Utility WI7370107 | 271 | 0 | 0 | 2 | 4.8 ppb |
| Boardwalk MHC LLC WI7370540 | 130 | 0 | 0 | 1 | 3 ppb |
| Deer Trail Village WI7370158 | 120 | 0 | 0 | 1 | 1.3 ppb |
| 2yk LLC WI7370123 | 25 | 0 | 0 | 1 | 1.6 ppb |
| Mosinee Waterworks WI7370159 | 3,406 | 0 | 0 | 0 | 2.2 ppb |
| Colby Waterworks WI7370169 | 1,829 | 0 | 0 | 0 | 1.0 ppb |
| Mosinee East System WI7372480 | 1,046 | 0 | 0 | 0 | 0.4 ppb |
| Hatley Waterworks WI7371256 | 550 | 0 | 0 | 0 | 1.5 ppb |
| Maizefield MHC (Manufactured Home Community) WI7370157 | 145 | 0 | 0 | 0 | 1.8 ppb |
| Edgewood Country Estates WI7371500 | 49 | 0 | 0 | 0 | 3 ppb |
| West Gate Estates Mobile Hms WI7370152 | 43 | 0 | 0 | 0 | 0.7 ppb |
ZIP reports in Marathon 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: 54408, 54427, 54471.
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.