Water quality in Portage, Wisconsin
Portage 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
Other community water systems in Columbia County
25 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Oakwood Terrace Portage |
100 | 0 | 3.2 mi | |
| Capital Hill Mobile Home Park Poynette |
36 | 0 | 3.5 mi | |
| Suburban Heights MHP Portage |
90 | 0 | 4.1 mi | |
| Saddle Ridge Estates Portage |
700 | 2 | 4.9 mi | |
| Inch Heights LLC Poynette |
47 | 0 | 7.1 mi | |
| Wyocena Waterworks Wyocena |
768 | 1 | 8.1 mi | |
| Pardeeville Waterworks Pardeeville |
2,151 | 0 | 9.6 mi | |
| Poynette Waterworks Poynette |
2,520 | 3 | 9.9 mi | |
| Poynette Mobile Estates Poynette |
150 | 4 | 10.2 mi | |
| Dells Estates Wisconsin Dells |
30 | 3 | 10.4 mi | |
| Harmony Grove San Dist Lodi |
1,950 | 0 | 10.8 mi | |
| Harmony Mobile Manor Lodi |
45 | 0 | 10.9 mi | |
| Rio Waterworks Rio |
1,095 | 3 | 13.3 mi | |
| Arlington Waterworks Arlington |
946 | 3 | 13.7 mi | |
| Lodi Waterworks Lodi |
3,146 | 3 | 14.3 mi | |
| Wisconsin Dells Waterworks Wisconsin Dells |
3,232 | 2 | 16.0 mi | |
| Crystal Lake RV Resort LLC Lodi |
725 | 1 | 17.2 mi | |
| Pine Haven Estates Doylestown |
45 | 2 | 18.1 mi | |
| Cambria Waterworks Cambria |
767 | 1 | 18.9 mi | |
| Pine Vista MHP 1 Prairie Du Sac |
60 | 0 | 19.1 mi | |
| Friesland Waterworks Friesland |
345 | 3 | 21.5 mi | |
| Fall River Waterworks Fall River |
1,793 | 2 | 24.1 mi | |
| Randolph Water Dept Randolph |
1,800 | 2 | 24.2 mi | |
| Wisconsin Academy Main Campus Columbus |
115 | 2 | 26.2 mi | |
| Columbus Utilities Columbus |
5,173 | 2 | 26.6 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 Portage 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.