Water quality in Oshkosh, Wisconsin
Oshkosh is in Winnebago County. 146 active public water systems serve the county; 29 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Winnebago County
10 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Algoma TN Sanitary Dist 1 Oshkosh |
3,935 | 0 | 3.2 mi | |
| Omro Waterworks Omro |
3,629 | 1 | 8.9 mi | |
| Neenah Waterworks Neenah |
27,506 | 0 | 11.7 mi | |
| Winneconne Waterworks Winneconne |
2,502 | 4 | 11.9 mi | |
| Rolling Meadows of Larsen LLC Larsen |
85 | 0 | 13.3 mi | |
| Willow Pines Mfd Home Community Winchester |
70 | 0 | 14.3 mi | |
| Fox Crossing Utilities West Neenah |
14,000 | 2 | 14.7 mi | |
| Menasha Elec & Water Util Menasha |
15,144 | 1 | 15.8 mi | |
| Fox Crossing Utilities East Neenah |
10,927 | 2 | 16.6 mi | |
| Winnebago Area Sanitary District Winnebago |
90 | 0 | — |
Non-community systems in Winnebago County (135: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Winnebago County, nearest to Oshkosh first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files or the centre of the first town EPA lists the system as serving, from Census Bureau county subdivision files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Wisconsin records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.