Michigan tap water quality

1,391 active community water systems.

Largest water systems

Grade	System	People	Health violations (5y)
A	Detroit Water and Sewerage Department	633,218	0
A	City of Grand Rapids Water System	306,901	0
B	Kalamazoo	192,992	0
A	Lansing Board of Water & Light	166,000	0
A	City of Warren	134,056	0
A	City of Sterling Heights	127,000	0
A	Ann Arbor	123,851	0
A	Dearborn	109,976	0
A	Clinton Township	100,513	0
A	Canton Township	99,627	0
A	Livonia	96,942	0
A	Macomb Township	90,000	0
A	Troy	85,854	0
A	Westland	85,420	0
B	City of Flint	81,252	1
A	Wyoming	76,501	0
A	Rochester Hills	74,000	0
A	Genesee County Water System	73,726	0
B	Waterford Township	73,441	1
A	Shelby Township	72,000	0
A	Southfield	71,739	0
A	Pontiac	63,776	0
C	Taylor	63,409	1
A	City of St. Clair Shores	59,715	0
C	Dearborn Heights	57,774	1
A	City of Royal Oak	57,236	0
A	City of Farmington Hills	56,984	0
A	City of Novi	56,780	0
A	Ypsilanti Community Utility Authority	53,988	0
A	Holland Board of Public Works	49,687	0
B	Redford Township	49,504	1
A	West Bloomfield Township	49,479	0
A	Monroe	49,467	0
A	City of Roseville	47,299	0
A	Portage	46,292	0
A	City of Saginaw	44,058	0
D	Battle Creek - Verona System	43,975	8
A	City of Midland	42,547	0
A	Plainfield Township	42,271	0
A	Bloomfield Township	41,691	0
A	Chesterfield Township	41,650	0
A	Georgetown Township	41,086	0
A	Saginaw Charter Township	40,840	0
A	Lincoln Park	38,144	0
A	Byron-Gaines Utility Authority	37,464	0
A	Muskegon	37,213	0
A	Kentwood	36,072	0
A	Monroe South County	33,816	0
A	Brownstown Township	33,194	0
B	Jackson	33,165	0

Most issues (systems serving 10,000+)

Battle Creek - Verona System

Serves 43,975 people · Groundwater · Full report →

8 health-based violations in the last 5 years; 3 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).

Independence Township

Serves 11,790 people · Groundwater · Full report →

No health-based violations in the last 5 years; PFOA/PFOS average above the 4 ppt federal limit: PFOS, PFOA; Other PFAS above 2024 limits (rule proposed for repeal): PFHxS, Hazard Index; Lead 90th percentile below the action level (2024).

Birmingham

Serves 20,472 people · Surface water · Full report →

2 health-based violations in the last 5 years; 3 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).

City of Mount Clemens

Serves 16,314 people · Surface water · Full report →

2 health-based violations in the last 5 years; 3 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).

Midland Co., Water Dist. No. 1 of

Serves 11,000 people · Surface water · Full report →

2 health-based violations in the last 5 years; 2 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2026).

Garden City

Serves 27,625 people · Surface water · Full report →

No health-based violations in the last 5 years; 1 monitoring/reporting violation; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile ABOVE the action level (2026).

Flat Rock

Serves 10,541 people · Surface water · Full report →

2 health-based violations in the last 5 years; 1 monitoring/reporting violation; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).

Dearborn Heights

Serves 57,774 people · Surface water · Full report →

1 health-based violation in the last 5 years; 11 monitoring/reporting violations; 3 not yet resolved; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).

Taylor

Serves 63,409 people · Surface water · Full report →

1 health-based violation in the last 5 years; 6 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile above the new 10 ppb action level (LCRI, effective Nov 1, 2027); Lead 90th percentile below the action level (2026).

Hamtramck

Serves 28,433 people · Surface water · Full report →

1 health-based violation in the last 5 years; 4 monitoring/reporting violations; 3 not yet resolved; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile above the new 10 ppb action level (LCRI, effective Nov 1, 2027); Lead 90th percentile below the action level (2026).

Kalamazoo

Serves 192,992 people · Groundwater · Full report →

No health-based violations in the last 5 years; 1 monitoring/reporting violation; PFOA/PFOS average above the 4 ppt federal limit: PFOS; Lead 90th percentile below the action level (2026).

Redford Township

Serves 49,504 people · Surface water · Full report →

1 health-based violation in the last 5 years; 3 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2026).

City of Owosso

Serves 16,353 people · Surface water · Full report →

1 health-based violation in the last 5 years; 3 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).

Harper Woods

Serves 14,236 people · Surface water · Full report →

1 health-based violation in the last 5 years; 3 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2026).

Michigan State University

Serves 12,793 people · Groundwater · Full report →

1 health-based violation in the last 5 years; 3 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).

Grosse Pointe Park

Serves 11,555 people · Surface water · Full report →

1 health-based violation in the last 5 years; 3 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).

Waterford Township

Serves 73,441 people · Groundwater · Full report →

1 health-based violation in the last 5 years; 1 monitoring/reporting violation; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).

Mount Pleasant

Serves 21,688 people · Surface water · Full report →

1 health-based violation in the last 5 years; 1 monitoring/reporting violation; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2024).

City of Burton

Serves 21,000 people · Surface water · Full report →

1 health-based violation in the last 5 years; 1 monitoring/reporting violation; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2023).

Big Rapids

Serves 10,403 people · Groundwater · Full report →

1 health-based violation in the last 5 years; 1 monitoring/reporting violation; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).

Cities

Ada Addison Adrian Ahmeek Akron Alanson Albion Algonac Allegan Allen Park Allendale Allouez Alma Almont Alpena Alpha Alto Amasa Ann Arbor Applegate Arcadia Armada Arnold Ashley Athens Atlanta Attica Au Gres Au Train Auburn Auburn Hills Augusta Bad Axe Baldwin Bancroft Bangor Baraga Bark River Baroda Barryton Bath Battle Creek Bay City Bay Port Bear Lake Beaverton Belding Bellaire Belleville Bellevue Belmont Benton Harbor Benzonia Bergland Berkley Berrien Center Berrien Springs Bessemer Beulah Big Bay Big Rapids Bingham Farms Birch Run Birmingham Blanchard Blissfield Bloomfield Hills Bloomingdale Borculo Boyne City Boyne Falls Breckenridge Bridgeport Bridgman Brighton Brimley Britton Bronson Brooklyn Brown City Brutus Buchanan Buckley Burr Oak Burt Burton Byron Byron Center Cadillac Caledonia Calumet Camden Canton Capac Carleton Carney Caro Carrollton Carson City Carsonville Caseville Casnovia Caspian Cass City Cassopolis Cedar Cedar Springs Cement City Center Line Central Lake Centreville Centreville (Rr Name Centervil Ceresco Champion Charlevoix Charlotte Chassell Chatham Cheboygan Chelsea Chesaning Clare Clarkston Clarksville Clawson Clifford Climax Clinton Clinton Township Clio Coldwater Coleman Coloma Colon Columbiaville Columbus Commerce Township Comstock Comstock Park Concord Constantine Conway Cooks Coopersville Copper City Copper Harbor Corunna Covert Croswell Crystal Falls Curtis Dansville Davisburg Davison De Tour Village Dearborn Dearborn Heights Decatur Deckerville Deerfield Delton Detour Detroit Dewitt Dexter Dimondale Diorite Dodgeville Dollar Bay Dorr Douglas Dowagiac Dowling Drummond Island Dryden Dundee Durand Eagle Eagle Harbor Eagle River East China East Grand Rapids East Jordan East Kingsford East Lansing East Tawas Eastlake Eastmanville Eastpointe Eastport Eaton Rapids Eau Claire Ecorse Edenville Edmore Edwardsburg Elberta Elk Rapids Elkton Ellsworth Elsie Empire Engadine Escanaba Essexville Evart Ewen Fair Haven Fairview Farmington Farmington Hills Farwell Fennville Fenton Ferndale Ferrysburg Filer City Flat Rock Flint Flushing Forestville Fort Gratiot Fostoria Fowler Fowlerville Frankenmuth Frankfort Franklin Fraser Frederic Freeland Freeport Fremont Fruitport Gaastra Gagetown Galesburg Garden Garden City Gay Gaylord Genesee Germfask Gibraltar Gladstone Gladwin Glen Arbor Glenn Gobles Goodrich Gowen Grand Beach Grand Blanc Grand Haven Grand Junction Grand Ledge Grand Marais Grand Rapids Grandville Grant Grass Lake Grawn Grayling Greenbush Greenland Greenville Grosse Ile Grosse Pointe Grosse Pointe Farms Grosse Pointe Park Grosse Pointe Shores Grosse Pointe Woods Gwinn Hadley Hale Hamburg Hamilton Hamtramck Hancock Harbert Harbor Beach Harbor Springs Harper Woods Harrison Harrison Township Harrisville Harsens Island Hart Hartford Hartland Haslett Hastings Hazel Park Hemlock Hermansville Hersey Hesperia Hickory Corners Higgins Lake Highland Highland Park Hillman Hillsdale Holland Holly Holt Holton Homer Hope Hopkins Horton Houghton Houghton Lake Houghton Lake Heights Howard City Howell Hubbell Hudson Hudsonville Huntington Woods Ida Idlewild Imlay City Indian River Ingalls Inkster Interlochen Ionia Iron Mountain Iron River Ironwood Ishpeming Ithaca Jackson Jamestown Jasper Jeddo Jenison Jones Jonesville Kalamazoo Kaleva Kalkaska Kawkawlin Keego Harbor Kent City Kentwood Kewadin Kincheloe Kingsford Kingsley Kingston L'anse La Salle Laingsburg Lake Ann Lake City Lake Linden Lake Odessa Lake Orion Lakeland Lakeside Lakeview Lambertville Lanse Lansing Lapeer Lathrup Village Lawrence Lawton Lennon Leonard Leslie Levering Lewiston Lexington Lincoln Park Linden Litchfield Little Lake Livonia Long Lake Lowell Ludington Lupton Luther Luzerne Lyons Mackinac Island Mackinaw City Macomb Madison Heights Mancelona Manchester Manistee Manistique Manitou Beach Manton Maple City Maple Rapids Marcellus Marenisco Marine City Marion Marlette Marne Marquette Marshall Martin Marysville Mason Mattawan Maybee Mayville Mc Bain McBain Mecosta Melvindale Memphis Mendon Menominee Merrill Mesick Metamora Michiana Michigan Center Middleton Middleville Midland Milan Milford Millersburg Millington Minden City Mio Mohawk Moline Monroe Montague Montgomery Montrose Morenci Morley Morrice Mount Clemens Mount Morris Mount Pleasant Muir Munger Munising Munith Muskegon Muskegon Heights Nadeau Nahma Napoleon Nashville National City National Mine Naubinway Negaunee New Baltimore New Boston New Buffalo New Haven New Hudson New Lothrop Newaygo Newberry Newport Niles North Branch North Muskegon North Street Northport Northville Norton Shores Norvell Norway Nottawa Novi Nunica Oak Park Oakland Oakley Oden Okemos Olivet Omena Omer Onaway Onekama Onondaga Onsted Ontonagon Orchard Lake Orleans Ortonville Oscoda Ossineke Otisville Otsego Ottawa Lake Ovid Owendale Owosso Oxford Painesdale Palmer Palmyra Parma Paw Paw Peck Pentwater Perrinton Perry Petersburg Petoskey Pewamo Pigeon Pinckney Pinconning Plainwell Pleasant Lake Pleasant Ridge Plymouth Pointe Aux Pins Pontiac Port Austin Port Hope Port Huron Port Sanilac Portage Portland Posen Potterville Powers Prescott Presque Isle Prudenville Pullman Quincy Quinnesec Ramsay Rapid River Ravenna Ray Reading Redford Reed City Reese Republic Richland Richmond Riga Ripley River Rouge Riverdale Riverside Riverview Rochester Rochester Hills Rock Rockford Rockland Rockwood Rodney Rogers City Romeo Romulus Roosevelt Park Roscommon Rose City Rosebush Roseville Royal Oak Rudyard Ruth Saginaw Saint Charles Saint Clair Saint Clair Shores Saint Helen Saint Ignace Saint Johns Saint Joseph Saint Louis Saline Sand Lake Sandusky Sanford Saranac Saugatuck Sault Sainte Marie Sault Ste. Marie Sawyer Schoolcraft Scottville Sebewaing Seney Shelby Shelbyville Shepherd Sheridan Sidney Skandia Smiths Creek Snover Sodus South Boardman South Haven South Lyon South Range South Rockwood Southfield Southgate Sparta Spring Arbor Spring Lake Springfield Springport Spruce St Joseph St. Clair Shores St. Ignace St. Johns St. Louis Standish Stanton Stephenson Sterling Sterling Heights Stevensville Stockbridge Sturgis Sunfield Suttons Bay Swartz Creek Sylvan Lake Tawas City Taylor Tecumseh Tekonsha Temperance Thompsonville Three Oaks Three Rivers Tipton Topinabee Traverse City Trenary Trenton Trout Creek Troy Twin Lake Twining Ubly Union Union City Unionville University Center Utica Van Buren Vandalia Vanderbilt Vassar Vermontville Vernon Vicksburg Vulcan Wakefield Waldron Walled Lake Walloon Lake Warren Washington Waterford Watersmeet Watervliet Wayland Wayne Webberville Weidman Wells West Bloomfield West Branch West Olive Westland Westphalia Wetmore White Cloud White Lake White Pigeon White Pine Whitehall Whitmore Lake Whittaker Whittemore Williamsburg Williamston Willis Wilson Wixom Wolverine Woodhaven Wyandotte Wyoming Yale Ypsilanti Zeeland