Water quality in Sun Prairie, Wisconsin
Sun Prairie 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 |
|---|---|---|---|---|
| East Bristol Utility Coop Sun Prairie |
80 | 0 | 4.8 mi | |
| Windsor Water Utility South Windsor |
4,607 | 0 | 7.2 mi | |
| Marshall Waterworks Marshall |
3,862 | 0 | 7.3 mi | |
| Deforest Waterworks Deforest |
10,500 | 2 | 7.6 mi | |
| Cottage Grove Waterworks Cottage Grove |
9,345 | 2 | 8.2 mi | |
| Windsor Water Utility North Morrisonville |
400 | 0 | 9.5 mi | |
| Woodbridge Estates Madison |
48 | 1 | 9.9 mi | |
| Mendota Mental Health Inst Madison |
2,787 | 1 | 10.4 mi | |
| Lake Pointe Apts Well 1 5320-5326 Madison |
60 | 0 | 10.4 mi | |
| Maple Bluff Waterworks Madison |
1,342 | 1 | 11.1 mi | |
| Lake Pointe/marina Bay Madison |
50 | 0 | 11.4 mi | |
| Lake Pointe Apts Well 2 5312-5318 Madison |
60 | 0 | 11.4 mi | |
| Deerfield Waterworks Deerfield |
2,510 | 0 | 12.5 mi | |
| Westport Water Utility Waunakee |
800 | 1 | 12.5 mi | |
| Westport Bishops Bay Area Waunakee |
80 | 1 | 12.6 mi | |
| Monona Waterworks Monona |
8,624 | 0 | 12.7 mi | |
| Waunakee Waterworks Waunakee |
14,879 | 1 | 12.8 mi | |
| Madison Water Utility Madison |
272,000 | 2 | 13.2 mi | |
| McFarland Waterworks Mc Farland |
9,676 | 0 | 14.0 mi | |
| Pine Ridge Apts Madison |
45 | 2 | 14.4 mi | |
| Country View Estates Deerfield |
65 | 3 | 15.0 mi | |
| Dane Waterworks Dane |
1,117 | 0 | 15.5 mi | |
| Shorewood Hills Waterworks Madison |
1,670 | 3 | 15.5 mi | |
| Lake Forest Water Coop Madison |
400 | 4 | 15.8 mi | |
| Dons Mobile Manor Waunakee |
160 | 4 | 16.6 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 Sun Prairie 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.