Water quality in Elroy, Wisconsin
Elroy is in Monroe County. 103 active public water systems serve the county; 29 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Monroe County
10 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Wilton Waterworks Wilton |
490 | 1 | 13.8 mi | |
| Oakdale Waterworks Oakdale |
317 | 2 | 15.9 mi | |
| Norwalk Waterworks Norwalk |
653 | 0 | 18.7 mi | |
| Tomah Waterworks Tomah |
9,192 | 1 | 20.5 mi | |
| Cashton Waterworks Cashton |
1,120 | 0 | 25.5 mi | |
| Fort McCoy South Post Fort Mccoy |
250 | 0 | 27.7 mi | |
| Fort McCoy North Post Fort Mccoy |
10,000 | 0 | 27.9 mi | |
| Warrens Waterworks Warrens |
540 | 0 | 29.2 mi | |
| Sparta Waterworks Sparta |
10,025 | 1 | 30.2 mi | |
| Cortland Acres Sparta |
145 | 4 | 30.5 mi |
Non-community systems in Monroe County (92: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Monroe County, nearest to Elroy 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.
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.