Water quality in Ann Arbor, Michigan
Ann Arbor is in Washtenaw County. 273 active public water systems serve the county; 117 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 Washtenaw County
31 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Barton Hills Ann Arbor |
450 | 2 | 2.2 mi | |
| Sisters of Mary, Mother of Eucharist Ann Arbor |
100 | 0 | 4.2 mi | |
| Orchard Grove |
725 | 1 | 4.7 mi | |
| Scio Township Ann Arbor |
8,500 | 1 | 5.1 mi | |
| Ann Arbor Township Ann Arbor |
1,338 | 0 | 5.1 mi | |
| Loch Alpine Sanitary Authority Ann Arbor |
1,506 | 2 | 5.3 mi | |
| Pittsfield Township Ann Arbor |
24,500 | 2 | 5.6 mi | |
| Superior Township Ypsilanti |
6,830 | 0 | 6.0 mi | |
| Regency at Whitmore Lake |
190 | 6 | 7.1 mi | |
| Dexter Dexter |
4,500 | 0 | 7.8 mi | |
| Westbrook Apartments Whitmore Lake |
330 | 4 | 8.0 mi | |
| Village at Eagle Gardens Whitmore Lake |
193 | 3 | 8.3 mi | |
| Saline Saline |
9,158 | 1 | 8.3 mi | |
| Thornton Farms |
1,188 | 0 | 8.5 mi | |
| Harbor Cove Apartments Whitmore Lake |
288 | 0 | 8.5 mi | |
| Ypsilanti Community Utility Authority Ypsilanti |
53,988 | 0 | 8.6 mi | |
| Andelina Farms |
750 | 0 | 10.2 mi | |
| Austin Commons II |
280 | 1 | 10.2 mi | |
| Northville Crossing |
1,890 | 3 | 11.2 mi | |
| Saline Valley Farms |
375 | 1 | 11.7 mi | |
| River Ridge Saline |
720 | 0 | 12.6 mi | |
| Copper Meadows |
128 | 2 | 12.8 mi | |
| Augusta Township Whittaker |
3,907 | 1 | 13.9 mi | |
| St. Louis Center Chelsea |
56 | 2 | 14.5 mi | |
| Chelsea Chelsea |
5,474 | 0 | 14.5 mi |
Non-community systems in Washtenaw County (241: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Washtenaw County, nearest to Ann Arbor 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 Michigan 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.