Ann Arbor Water Quality
Michigan
The tap water in Ann Arbor, Michigan is served by 10 EPA-regulated water systems covering approximately 279,046 people. 2 health-based violations are on record, most recently for 8000 in 2017. Data source: EPA Safe Drinking Water Information System.
Drinking water in Ann Arbor, Michigan is delivered through 10 EPA-regulated community water systems serving an estimated 279,046 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
The SDWIS record for Ann Arbor shows 2 total violations across all 10 systems, of which 2 are health-based, meaning either a Maximum Contaminant Level (MCL) was exceeded or a required treatment technique was not followed. Contaminants cited in health-based violations include 8000. 6 TRI-reporting industrial facilities are also located within the city limits.
A past EPA violation does not mean the water is currently unsafe, utilities are required to notify customers and remediate under state primacy oversight. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Michigan drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| ANN ARBOR | 241,868 | 0 | Clean |
| PITTSFIELD TOWNSHIP | 24,500 | 0 | Clean |
| SCIO TOWNSHIP | 8,500 | 0 | Clean |
| LOCH ALPINE SANITARY AUTHORITY | 1,506 | 0 | Clean |
| ANN ARBOR TOWNSHIP | 1,338 | 0 | Clean |
| BARTON HILLS | 450 | 0 | Clean |
| SALINE VALLEY FARMS | 375 | 2 | Health |
| WHITMORE LAKE APARTMENTS | 281 | 0 | Clean |
| COPPER MEADOWS | 128 | 0 | Clean |
| SISTERS OF MARY, MOTHER OF EUCHARIST | 100 | 0 | Clean |
Does this city have health-based water violations?
Health-based violations indicate contaminant levels that exceeded EPA maximum contaminant levels (MCLs). This does not necessarily mean water is currently unsafe.
| Contaminant | Begin Date |
|---|---|
| 8000 | 2017-04-03 |
| 8000 | 2017-04-03 |
TRI Facilities in Ann Arbor
| Facility | Total Releases |
|---|---|
| U.S. EPA National Vehicle & Fuel Emissions Laboratory | 51.1K lbs |
| Cayman Chemical Co Inc. | 19.0K lbs |
| Thetford Corp | 1.1K lbs |
| Cadillac Asphalt LLC - Ann Arbor | 3 lbs |
| Superior Materials 38 | 0 lbs |
| Extang Corp | 0 lbs |
Frequently Asked Questions
Is Ann Arbor, Michigan water safe to drink? ▼
How many water violations does Ann Arbor have? ▼
What contaminants were found in Ann Arbor water? ▼
How many water systems serve Ann Arbor? ▼
Where does Ann Arbor get its drinking water? ▼
Are there pollution sources near Ann Arbor? ▼
About This Data
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). Violations are reported by state agencies to EPA and include both health-based (MCL exceedances) and monitoring/reporting violations.
A reported violation does not necessarily mean water is currently unsafe to drink. Many violations are resolved quickly, and public water systems are required to notify customers of significant issues. For current water quality, contact your local water utility.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.