Water quality in Plain, Wisconsin
Plain is in Sauk County. 194 active public water systems serve the county; 32 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 Sauk County
24 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Spring Green Estates Spring Green |
300 | 0 | 7.0 mi | |
| Spring Green Estates North Spring Green |
32 | 2 | 7.0 mi | |
| Spring Green Waterworks Spring Green |
1,626 | 0 | 7.1 mi | |
| Spring Green Estates South Spring Green |
40 | 2 | 7.9 mi | |
| Loganville Waterworks Loganville |
300 | 0 | 11.2 mi | |
| Maple Park Condominiums Prairie Du Sac |
150 | 2 | 14.7 mi | |
| Bluffview Sanitary District Prairie Du Sac |
450 | 2 | 14.9 mi | |
| Prairie DU Sac Waterworks Prairie Du Sac |
4,006 | 2 | 15.1 mi | |
| Rock Springs Waterworks Rock Springs |
292 | 1 | 15.2 mi | |
| North Freedom Waterworks North Freedom |
589 | 1 | 15.5 mi | |
| Sauk City Waterworks Sauk City |
3,518 | 1 | 15.6 mi | |
| Reedsburg Waterworks Reedsburg |
9,984 | 0 | 17.9 mi | |
| West Baraboo Waterworks West Baraboo |
1,414 | 0 | 19.1 mi | |
| Summer Oaks Condo Assoc Merrimac |
70 | 0 | 19.1 mi | |
| Ironton Waterworks La Valle |
253 | 4 | 19.3 mi | |
| Baraboo Waterworks Baraboo |
12,703 | 0 | 19.9 mi | |
| Glacier View Subdivision Baraboo |
75 | 3 | 20.2 mi | |
| LA Valle Waterworks La Valle |
365 | 1 | 21.7 mi | |
| Merrimac Estates MHP Merrimac |
37 | 0 | 21.9 mi | |
| Equinox Rei LLC Dellwood Estates Reedsburg |
70 | 0 | 22.1 mi | |
| Dell Creek Estates Reedsburg |
50 | 3 | 22.1 mi | |
| Merrimac Waterworks Merrimac |
440 | 3 | 22.6 mi | |
| Lake Delton Waterworks Lake Delton |
2,914 | 1 | 23.6 mi | |
| Lower Dells MHC Lake Delton |
75 | 0 | 25.7 mi |
Non-community systems in Sauk County (169: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Sauk County, nearest to Plain 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.