Water quality in Dekorra, Wisconsin
Dekorra is in Columbia County. 139 active public water systems serve the county; 35 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 Columbia County
25 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Inch Heights LLC Poynette |
47 | 0 | 2.9 mi | |
| Suburban Heights MHP Portage |
90 | 0 | 4.3 mi | |
| Poynette Waterworks Poynette |
2,520 | 3 | 5.1 mi | |
| Poynette Mobile Estates Poynette |
150 | 4 | 5.5 mi | |
| Harmony Mobile Manor Lodi |
45 | 0 | 6.6 mi | |
| Portage Waterworks Portage |
10,437 | 0 | 6.8 mi | |
| Wyocena Waterworks Wyocena |
768 | 1 | 7.0 mi | |
| Harmony Grove San Dist Lodi |
1,950 | 0 | 7.3 mi | |
| Saddle Ridge Estates Portage |
700 | 2 | 7.3 mi | |
| Oakwood Terrace Portage |
100 | 0 | 8.0 mi | |
| Arlington Waterworks Arlington |
946 | 3 | 8.9 mi | |
| Pardeeville Waterworks Pardeeville |
2,151 | 0 | 10.1 mi | |
| Lodi Waterworks Lodi |
3,146 | 3 | 10.1 mi | |
| Rio Waterworks Rio |
1,095 | 3 | 11.0 mi | |
| Crystal Lake RV Resort LLC Lodi |
725 | 1 | 13.9 mi | |
| Dells Estates Wisconsin Dells |
30 | 3 | 15.2 mi | |
| Pine Haven Estates Doylestown |
45 | 2 | 15.7 mi | |
| Pine Vista MHP 1 Prairie Du Sac |
60 | 0 | 16.6 mi | |
| Cambria Waterworks Cambria |
767 | 1 | 18.6 mi | |
| Wisconsin Dells Waterworks Wisconsin Dells |
3,232 | 2 | 19.5 mi | |
| Fall River Waterworks Fall River |
1,793 | 2 | 21.4 mi | |
| Friesland Waterworks Friesland |
345 | 3 | 21.8 mi | |
| Wisconsin Academy Main Campus Columbus |
115 | 2 | 23.1 mi | |
| Columbus Utilities Columbus |
5,173 | 2 | 23.5 mi | |
| Randolph Water Dept Randolph |
1,800 | 2 | 23.7 mi |
Non-community systems in Columbia County (113: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Columbia County, nearest to Dekorra 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.