Water quality in Monona, Wisconsin
Monona 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 |
|---|---|---|---|---|
| Madison Water Utility Madison |
272,000 | 2 | 3.1 mi | |
| Woodbridge Estates Madison |
48 | 1 | 3.2 mi | |
| McFarland Waterworks Mc Farland |
9,676 | 0 | 3.3 mi | |
| Lake Forest Water Coop Madison |
400 | 4 | 4.1 mi | |
| Maple Bluff Waterworks Madison |
1,342 | 1 | 4.4 mi | |
| Pine Ridge Apts Madison |
45 | 2 | 5.3 mi | |
| Shorewood Hills Waterworks Madison |
1,670 | 3 | 5.9 mi | |
| Fitchburg Utility Dist 1 South Fitchburg |
350 | 0 | 6.2 mi | |
| Country View Mobile Home Community LLC Oregon |
80 | 4 | 6.2 mi | |
| Fitchburg Utility Dist 1 Fitchburg |
29,900 | 0 | 6.2 mi | |
| Danville Drive Service Area Fitchburg |
150 | 1 | 6.7 mi | |
| Rimrock Road Neighborhood Fitchburg |
135 | 1 | 6.7 mi | |
| Cottage Grove Waterworks Cottage Grove |
9,345 | 2 | 6.9 mi | |
| Mendota Mental Health Inst Madison |
2,787 | 1 | 7.0 mi | |
| Lake Pointe Apts Well 2 5312-5318 Madison |
60 | 0 | 7.2 mi | |
| Lake Pointe/marina Bay Madison |
50 | 0 | 7.2 mi | |
| Oakhill Correctional Inst Oregon |
1,096 | 3 | 7.3 mi | |
| Bay View Heights INC Stoughton |
450 | 2 | 7.3 mi | |
| Lake Pointe Apts Well 1 5320-5326 Madison |
60 | 0 | 8.4 mi | |
| Westport Water Utility Waunakee |
800 | 1 | 9.0 mi | |
| Country Vineyard 4 Oregon |
28 | 0 | 9.4 mi | |
| Oregon Waterworks Oregon |
11,200 | 0 | 9.5 mi | |
| Middleton Waterworks Middleton |
23,868 | 3 | 9.6 mi | |
| Applewood Hill Madison |
125 | 2 | 9.8 mi | |
| Sun Prairie Utilities Sun Prairie |
39,300 | 0 | 10.0 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 Monona 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.