State
Michigan: drinking water records
EPA lists 1,429 community water systems serving homes in Michigan. 312 took part in EPA's national PFAS survey (UCMR 5), and 44 found at least one PFAS above the level laboratories can measure.
In focus1,429community water systems
Public records. Clearer context.
0
ZIP reports published
1,429
community water systems
303
systems with a health-based violation since 2016
118
systems that reached the lead action level since 2016
Counties
- Alcona County 9 systems
- Alger County 8 systems
- Allegan County 47 systems
- Alpena County 7 systems
- Antrim County 17 systems
- Arenac County 8 systems
- Baraga County 3 systems
- Barry County 15 systems
- Bay County 23 systems
- Benzie County 12 systems
- Berrien County 36 systems
- Branch County 12 systems
- Calhoun County 22 systems
- Cass County 17 systems
- Charlevoix County 20 systems
- Cheboygan County 12 systems
- Chippewa County 7 systems
- Clare County 5 systems
- Clinton County 11 systems
- Crawford County 7 systems
- Delta County 9 systems
- Dickinson County 8 systems
- Eaton County 17 systems
- Emmet County 37 systems
- Genesee County 35 systems
- Gladwin County 8 systems
- Gogebic County 9 systems
- Grand Traverse County 26 systems
- Gratiot County 18 systems
- Hillsdale County 14 systems
- Houghton County 18 systems
- Huron County 19 systems
- Ingham County 24 systems
- Ionia County 17 systems
- Iosco County 14 systems
- Iron County 17 systems
- Isabella County 12 systems
- Jackson County 22 systems
- Kalamazoo County 19 systems
- Kalkaska County 2 systems
- Kent County 44 systems
- Keweenaw County 9 systems
- Lake County 12 systems
- Lapeer County 16 systems
- Leelanau County 16 systems
- Lenawee County 31 systems
- Livingston County 43 systems
- Luce County 4 systems
- Mackinac County 5 systems
- Macomb County 26 systems
- Manistee County 13 systems
- Marquette County 24 systems
- Mason County 17 systems
- Mecosta County 10 systems
- Menominee County 5 systems
- Midland County 8 systems
- Missaukee County 6 systems
- Monroe County 10 systems
- Montcalm County 12 systems
- Montmorency County 6 systems
- Muskegon County 25 systems
- Newaygo County 8 systems
- Oakland County 108 systems
- Oceana County 7 systems
- Ogemaw County 7 systems
- Ontonagon County 5 systems
- Osceola County 7 systems
- Oscoda County 5 systems
- Otsego County 12 systems
- Ottawa County 23 systems
- Presque Isle County 6 systems
- Roscommon County 14 systems
- Saginaw County 25 systems
- Sanilac County 21 systems
- Schoolcraft County 4 systems
- Shiawassee County 18 systems
- St. Clair County 20 systems
- St. Joseph County 15 systems
- Tuscola County 11 systems
- Van Buren County 19 systems
- Washtenaw County 33 systems
- Wayne County 46 systems
- Wexford County 8 systems
ZIP reports
Sources
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.