COUNTY WATER-SYSTEM LEDGER
Marathon, Wisconsin
EPA’s September 2026 export lists 7 active community water systems serving Marathon, Wisconsin, with 4 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Marathon, Wisconsin
EPA associates 7 covered systems with Marathon, Wisconsin; their reported population-served values total 78,421 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Wausau WaterworksWI7370102 | 39,994 | Ground water | No current violation flagged |
| Weston Municipal UtilitiesWI7370163 | 16,000 | Ground water | No current violation flagged |
| Kronenwetter Water & Sewer UtilityWI7371700 | 6,931 | Ground water | Other current violation flag |
| Rib Mountain Water UtilityWI7370660 | 6,398 | Ground water | No current violation flagged |
| Mosinee WaterworksWI7370159 | 3,406 | Ground water | Other current violation flag |
| Rothschild WaterworksWI7370161 | 3,190 | Ground water | Other current violation flag |
| Abbotsford WaterworksWI7370148 | 2,502 | Ground water | Current monitoring/reporting flag |
02 / SOURCE MIX
Primary water sources for Marathon, Wisconsin
EPA classifies 7 systems serving Marathon, Wisconsin across 1 primary-source categories; Ground water is the largest category with 7 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.