Water quality in DeForest, Wisconsin
DeForest is in Dane County. 298 active public water systems serve the county; 40 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 Dane County
45 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Windsor Water Utility South Windsor |
4,607 | 0 | 2.7 mi | |
| Windsor Water Utility North Morrisonville |
400 | 0 | 3.3 mi | |
| Sun Prairie Utilities Sun Prairie |
39,300 | 0 | 5.6 mi | |
| Lake Pointe Apts Well 1 5320-5326 Madison |
60 | 0 | 6.6 mi | |
| Mendota Mental Health Inst Madison |
2,787 | 1 | 7.4 mi | |
| Westport Bishops Bay Area Waunakee |
80 | 1 | 7.8 mi | |
| Waunakee Waterworks Waunakee |
14,879 | 1 | 7.8 mi | |
| Lake Pointe/marina Bay Madison |
50 | 0 | 8.2 mi | |
| Lake Pointe Apts Well 2 5312-5318 Madison |
60 | 0 | 8.2 mi | |
| Westport Water Utility Waunakee |
800 | 1 | 8.4 mi | |
| East Bristol Utility Coop Sun Prairie |
80 | 0 | 8.9 mi | |
| Dane Waterworks Dane |
1,117 | 0 | 9.3 mi | |
| Maple Bluff Waterworks Madison |
1,342 | 1 | 9.5 mi | |
| Woodbridge Estates Madison |
48 | 1 | 9.9 mi | |
| Dons Mobile Manor Waunakee |
160 | 4 | 11.9 mi | |
| Cottage Grove Waterworks Cottage Grove |
9,345 | 2 | 11.9 mi | |
| Madison Water Utility Madison |
272,000 | 2 | 12.0 mi | |
| Pine Ridge Apts Madison |
45 | 2 | 12.2 mi | |
| Monona Waterworks Monona |
8,624 | 0 | 13.0 mi | |
| Shorewood Hills Waterworks Madison |
1,670 | 3 | 13.2 mi | |
| Marshall Waterworks Marshall |
3,862 | 0 | 13.7 mi | |
| Middleton Waterworks Middleton |
23,868 | 3 | 14.1 mi | |
| Lake Forest Water Coop Madison |
400 | 4 | 14.7 mi | |
| McFarland Waterworks Mc Farland |
9,676 | 0 | 15.5 mi | |
| Applewood Hill Madison |
125 | 2 | 17.2 mi |
Non-community systems in Dane County (252: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Dane County, nearest to DeForest 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.