Water quality in Marshall, Wisconsin
Marshall 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
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 | 5.2 mi | |
| Sun Prairie Utilities Sun Prairie |
39,300 | 0 | 7.4 mi | |
| Cottage Grove Waterworks Cottage Grove |
9,345 | 2 | 9.3 mi | |
| Deerfield Waterworks Deerfield |
2,510 | 0 | 10.2 mi | |
| Windsor Water Utility South Windsor |
4,607 | 0 | 12.4 mi | |
| Country View Estates Deerfield |
65 | 3 | 12.4 mi | |
| Deforest Waterworks Deforest |
10,500 | 2 | 12.8 mi | |
| Woodbridge Estates Madison |
48 | 1 | 13.4 mi | |
| Cambridge Water & Sewer Utility Cambridge |
1,638 | 3 | 13.9 mi | |
| Windsor Water Utility North Morrisonville |
400 | 0 | 14.5 mi | |
| Mendota Mental Health Inst Madison |
2,787 | 1 | 15.1 mi | |
| Maple Bluff Waterworks Madison |
1,342 | 1 | 15.2 mi | |
| Lake Pointe Apts Well 1 5320-5326 Madison |
60 | 0 | 15.3 mi | |
| Monona Waterworks Monona |
8,624 | 0 | 15.6 mi | |
| McFarland Waterworks Mc Farland |
9,676 | 0 | 15.8 mi | |
| Lake Pointe/marina Bay Madison |
50 | 0 | 16.1 mi | |
| Lake Pointe Apts Well 2 5312-5318 Madison |
60 | 0 | 16.1 mi | |
| Madison Water Utility Madison |
272,000 | 2 | 16.9 mi | |
| Westport Water Utility Waunakee |
800 | 1 | 17.4 mi | |
| Westport Bishops Bay Area Waunakee |
80 | 1 | 17.7 mi | |
| Waunakee Waterworks Waunakee |
14,879 | 1 | 17.8 mi | |
| Pine Ridge Apts Madison |
45 | 2 | 18.5 mi | |
| Bay View Heights INC Stoughton |
450 | 2 | 19.3 mi | |
| Lake Forest Water Coop Madison |
400 | 4 | 19.3 mi | |
| Shorewood Hills Waterworks Madison |
1,670 | 3 | 19.6 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 Marshall 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.