COUNTY WATER-SYSTEM LEDGER
Washtenaw, Michigan
EPA’s September 2026 export lists 10 active community water systems serving Washtenaw, Michigan, with 0 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Washtenaw, Michigan
EPA associates 10 covered systems with Washtenaw, Michigan; their reported population-served values total 248,071 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Ann ArborMI0000220 | 123,851 | Surface water | No current violation flagged |
| Ypsilanti Community Utility AuthorityMI0007260 | 53,988 | Surface water purchased | No current violation flagged |
| Pittsfield TownshipMI0005360 | 24,500 | Surface water purchased | No current violation flagged |
| SalineMI0005900 | 9,158 | Ground water | No current violation flagged |
| Scio TownshipMI0005977 | 8,500 | Surface water purchased | No current violation flagged |
| MilanMI0004380 | 7,363 | Ground water | No current violation flagged |
| Superior TownshipMI0006490 | 6,830 | Surface water purchased | No current violation flagged |
| ChelseaMI0001370 | 5,474 | Ground water | No current violation flagged |
| DexterMI0001810 | 4,500 | Ground water | No current violation flagged |
| Augusta TownshipMI0000321 | 3,907 | Surface water purchased | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Washtenaw, Michigan
EPA classifies 10 systems serving Washtenaw, Michigan across 3 primary-source categories; Surface water is the largest category with 1 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.