Water quality for ZIP code 48109
ZIP 48109 covers Ann Arbor in Washtenaw County, Michigan, one of 14 ZIP codes in the 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 | 3.6 mi | |
| Sisters of Mary, Mother of Eucharist Ann Arbor |
100 | 0 | 3.7 mi | |
| Superior Township Ypsilanti |
6,830 | 0 | 4.5 mi | |
| Pittsfield Township Ann Arbor |
24,500 | 2 | 5.0 mi | |
| Ann Arbor Township Ann Arbor |
1,338 | 0 | 5.1 mi | |
| Orchard Grove |
725 | 1 | 5.4 mi | |
| Scio Township Ann Arbor |
8,500 | 1 | 6.5 mi | |
| Loch Alpine Sanitary Authority Ann Arbor |
1,506 | 2 | 6.9 mi | |
| Ypsilanti Community Utility Authority Ypsilanti |
53,988 | 0 | 7.1 mi | |
| Regency at Whitmore Lake |
190 | 6 | 8.0 mi | |
| Saline Saline |
9,158 | 1 | 8.2 mi | |
| Westbrook Apartments Whitmore Lake |
330 | 4 | 8.9 mi | |
| Village at Eagle Gardens Whitmore Lake |
193 | 3 | 9.2 mi | |
| Dexter Dexter |
4,500 | 0 | 9.4 mi | |
| Harbor Cove Apartments Whitmore Lake |
288 | 0 | 9.4 mi | |
| Andelina Farms |
750 | 0 | 9.5 mi | |
| Thornton Farms |
1,188 | 0 | 9.9 mi | |
| Austin Commons II |
280 | 1 | 10.3 mi | |
| Northville Crossing |
1,890 | 3 | 11.0 mi | |
| Saline Valley Farms |
375 | 1 | 11.4 mi | |
| Augusta Township Whittaker |
3,907 | 1 | 12.6 mi | |
| River Ridge Saline |
720 | 0 | 13.2 mi | |
| Milan Milan |
7,363 | 0 | 14.2 mi | |
| Copper Meadows |
128 | 2 | 14.3 mi | |
| St. Louis Center Chelsea |
56 | 2 | 15.9 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, the county this ZIP code lies in, nearest to the ZIP code's centre 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.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA 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.