Water quality in Deerfield, Wisconsin
Deerfield 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 |
|---|---|---|---|---|
| Country View Estates Deerfield |
65 | 3 | 2.3 mi | |
| Cambridge Water & Sewer Utility Cambridge |
1,638 | 3 | 4.0 mi | |
| Cottage Grove Waterworks Cottage Grove |
9,345 | 2 | 7.0 mi | |
| Marshall Waterworks Marshall |
3,862 | 0 | 9.5 mi | |
| McFarland Waterworks Mc Farland |
9,676 | 0 | 10.3 mi | |
| Stoughton Waterworks Stoughton |
13,078 | 0 | 10.6 mi | |
| Bay View Heights INC Stoughton |
450 | 2 | 11.4 mi | |
| Monona Waterworks Monona |
8,624 | 0 | 12.5 mi | |
| Woodbridge Estates Madison |
48 | 1 | 12.7 mi | |
| Sun Prairie Utilities Sun Prairie |
39,300 | 0 | 12.7 mi | |
| Fitchburg Utility Dist 1 South Fitchburg |
350 | 0 | 15.1 mi | |
| Country View Mobile Home Community LLC Oregon |
80 | 4 | 15.1 mi | |
| Maple Bluff Waterworks Madison |
1,342 | 1 | 15.2 mi | |
| Madison Water Utility Madison |
272,000 | 2 | 15.4 mi | |
| East Bristol Utility Coop Sun Prairie |
80 | 0 | 16.0 mi | |
| Oakhill Correctional Inst Oregon |
1,096 | 3 | 16.2 mi | |
| Lake Forest Water Coop Madison |
400 | 4 | 16.4 mi | |
| Mendota Mental Health Inst Madison |
2,787 | 1 | 16.9 mi | |
| Country Vineyard 4 Oregon |
28 | 0 | 17.0 mi | |
| Oregon Waterworks Oregon |
11,200 | 0 | 17.1 mi | |
| Danville Drive Service Area Fitchburg |
150 | 1 | 17.4 mi | |
| Rimrock Road Neighborhood Fitchburg |
135 | 1 | 17.4 mi | |
| Windsor Water Utility South Windsor |
4,607 | 0 | 17.4 mi | |
| Pine Ridge Apts Madison |
45 | 2 | 17.6 mi | |
| Lake Pointe Apts Well 2 5312-5318 Madison |
60 | 0 | 17.7 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 Deerfield 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.