Water quality for ZIP code 53561
ZIP 53561 covers Merrimac and Lake Wisconsin in Sauk County, Wisconsin, one of 14 ZIP codes in the county. 194 active public water systems serve the county; 32 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Sauk County
24 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Merrimac Waterworks Merrimac |
440 | 3 | 1.8 mi | |
| Summer Oaks Condo Assoc Merrimac |
70 | 0 | 3.4 mi | |
| Bluffview Sanitary District Prairie Du Sac |
450 | 2 | 6.9 mi | |
| Maple Park Condominiums Prairie Du Sac |
150 | 2 | 7.1 mi | |
| Glacier View Subdivision Baraboo |
75 | 3 | 7.1 mi | |
| Baraboo Waterworks Baraboo |
12,703 | 0 | 7.3 mi | |
| Prairie DU Sac Waterworks Prairie Du Sac |
4,006 | 2 | 8.6 mi | |
| West Baraboo Waterworks West Baraboo |
1,414 | 0 | 8.6 mi | |
| Sauk City Waterworks Sauk City |
3,518 | 1 | 9.5 mi | |
| North Freedom Waterworks North Freedom |
589 | 1 | 12.0 mi | |
| Lake Delton Waterworks Lake Delton |
2,914 | 1 | 13.7 mi | |
| Lower Dells MHC Lake Delton |
75 | 0 | 13.7 mi | |
| Rock Springs Waterworks Rock Springs |
292 | 1 | 15.1 mi | |
| Dell Creek Estates Reedsburg |
50 | 3 | 15.4 mi | |
| Equinox Rei LLC Dellwood Estates Reedsburg |
70 | 0 | 16.0 mi | |
| Reedsburg Waterworks Reedsburg |
9,984 | 0 | 20.1 mi | |
| Loganville Waterworks Loganville |
300 | 0 | 20.2 mi | |
| Plain Waterworks Plain |
792 | 2 | 21.9 mi | |
| Spring Green Waterworks Spring Green |
1,626 | 0 | 26.2 mi | |
| Spring Green Estates Spring Green |
300 | 0 | 26.3 mi | |
| Spring Green Estates North Spring Green |
32 | 2 | 26.3 mi | |
| Spring Green Estates South Spring Green |
40 | 2 | 27.1 mi | |
| Ironton Waterworks La Valle |
253 | 4 | 27.3 mi | |
| LA Valle Waterworks La Valle |
365 | 1 | 27.9 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, the county this ZIP code lies in, nearest to the ZIP code's centre 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.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA 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.