Michigan Water Quality
Health violation data for 1,433 community water systems in Michigan. Based on EPA Safe Drinking Water Information System (SDWIS) data.
Water Systems
1,433
Total Violations
1,000
Systems with Violations
50
Cities with Issues
183
Water Systems with Most Violations
| # | Water System | Violations | Health |
|---|---|---|---|
| 1 | DEERFIELD Deerfield | 35 | Yes |
| 2 | CAMP INN ASSOCIATES, LLC Farmington Hills | 29 | Yes |
| 3 | WESTHAVEN MOBILE HOME PARK, LLC Flint | 28 | Yes |
| 4 | BUTTONWOOD BAY MHP Southfield | 23 | Yes |
| 5 | NAHMA TOWNSHIP Nahma | 22 | Yes |
| 6 | FENTON HARBOR CONDOMINIUMS Grand Blanc | 21 | Yes |
| 7 | RIGA TOWNSHIP Riga | 19 | Yes |
| 8 | WATERS EDGE MH COMMUNITY Adrian | 19 | Yes |
| 9 | ROSE HILL CENTER Holly | 18 | Yes |
| 10 | SOMERSET MOBILE HOME PARK Coldwater | 18 | Yes |
| 11 | BENTON HARBOR Benton Harbor | 16 | Yes |
| 12 | NORTHWOODS COMMUNITY Owosso | 15 | Yes |
| 13 | MEADOWBROOK MH COMMUNITY, LLC Farmington Hills | 14 | Yes |
| 14 | ST. LOUIS CENTER Chelsea | 14 | Yes |
| 15 | ADDISON Addison | 12 | Yes |
| 16 | GREEN BROOK ESTATES Fowlerville | 12 | Yes |
| 17 | CADGEWITH FARMS Milford | 12 | Yes |
| 18 | GREAT LAKES WATER AUTHORITY Detroit | 11 | Yes |
| 19 | BYRON, VILLAGE OF Byron | 10 | Yes |
| 20 | SANDHILL ESTATES Attica | 10 | Yes |
| 21 | SHELL CREEK PARK Southfield | 9 | Yes |
| 22 | BARAGA Baraga | 9 | Yes |
| 23 | BATTLE CREEK - VERONA SYSTEM Battle Creek | 9 | Yes |
| 24 | HERMANSVILLE HOUSING COMM. Hermansville | 9 | Yes |
| 25 | LINCOLN PINES Gowen | 9 | Yes |
| 26 | COZY OAKS MHP Freeland | 9 | Yes |
| 27 | LAPEER, CITY OF Lapeer | 8 | Yes |
| 28 | THOMPSONVILLE, VILLAGE OF Thompsonville | 7 | Yes |
| 29 | PINE HAVEN ESTATES MHC Southfield | 7 | Yes |
| 30 | BARN SWALLOW APARTMENTS Galesburg | 6 | Yes |
| 31 | BIRMINGHAM Birmingham | 6 | Yes |
| 32 | BLUE WATER VILLAGE WELL SITE, LLC Lansing | 6 | Yes |
| 33 | HILLSDALE Hillsdale | 6 | Yes |
| 34 | MIDLAND CO., WATER DIST. NO. 1 OF Sanford | 6 | Yes |
| 35 | MOUNT CLEMENS, CITY OF Mt Clemens | 6 | Yes |
| 36 | RICHMOND TOWNSHIP Palmer | 6 | Yes |
| 37 | PINCONNING, CITY OF Pinconning | 6 | Yes |
| 38 | SWARTZ CREEK, CITY OF Swartz Creek | 6 | Yes |
| 39 | SUNSET MHP Adrian | 6 | Yes |
| 40 | COACHLIGHT MHP LLC Farmington Hills | 5 | Yes |
| 41 | BUCKLEY, VILLAGE OF Buckley | 5 | Yes |
| 42 | OAK POINTE Brighton | 5 | Yes |
| 43 | GRANT TOWNSHIP - COPPER HARBOR Copper Harbor | 5 | Yes |
| 44 | EMMETT TOWNSHIP Battle Creek | 5 | Yes |
| 45 | SHANTY CREEK - WATARS ASSOCIATION Bellaire | 5 | Yes |
| 46 | ST. IGNACE St. Ignace | 5 | Yes |
| 47 | COREWELL HEALTH-BERRIEN CNTR St. Jospeh | 5 | Yes |
| 48 | WEST HICKORY HAVEN Milford | 5 | Yes |
| 49 | OAKVIEW MHP Southfield | 4 | Yes |
| 50 | MAPLEWOOD ESTATES MHC LLC Belleville | 4 | Yes |
Most Common Contaminants in Michigan
| Contaminant | Violations | Systems Affected |
|---|---|---|
| Combined Radium 226/228 | 184 | 76 |
| Barium | 159 | 20 |
| Gross Alpha | 132 | 108 |
| Total Trihalomethanes (TTHM) | 115 | 20 |
| E. coli | 79 | 48 |
| Haloacetic Acids (HAA5) | 56 | 7 |
| Fluoride | 56 | 30 |
| Chlorine | 44 | 29 |
| Lead & Copper Rule | 43 | 9 |
| Atrazine | 36 | 3 |
| Nitrate | 26 | 6 |
| Chloroform | 25 | 6 |
| Total Coliform (RTCR) | 15 | 9 |
| Turbidity | 10 | 5 |
| Arsenic | 9 | 3 |
Cities with Water Quality Issues
Armada Southfield Clinton Township New Baltimore Roseville Troy Commerce Township Detroit Ann Arbor Belleville Brighton Chelsea Flat Rock Whitmore Lake Monroe Ypsilanti River Rouge Ferndale Redford Rochester Hills Shelby Township Farmington Hills Pontiac Novi Fenton Harbor Beach Holly Lapeer Flint Burton Saginaw Hemlock Bay City Essexville Oscoda Belding East Lansing Eaton Rapids Fowlerville Howell +143 more
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About This Data
Water quality data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations. Only community water systems (CWS) in Michigan are included.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.