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Michigan Water Quality
667
Utilities in database
7.3M
Residents served
42%
On private wells
2
Key contaminants tracked
Drinking Water in Michigan
Michigan has 667 community water systems serving approximately 7.3 million residents. Primary water sources include groundwater. The most commonly reported contaminants include lead, disinfection byproducts. 42% of Michigan residents rely on private wells. EGLE holds primary enforcement authority under the Safe Drinking Water Act.
Utilities in Michigan
551–575 of 667Linwood Metropolitan District
MI0003910 · 909 served
Onsted
MI0005020 · 907 served
Lake Park Village Condominiums
MI0002277 · 900 served
Green Oak Twp - Centennial Farms
MI0001543 · 900 served
Bingham Farms
MI0000715 · 898 served
Village of Mackinaw City
MI0003980 · 897 served
Grant
MI0002823 · 894 served
Augusta
MI0000320 · 885 served
City of Onaway
MI0005010 · 880 served
Village of Suttons Bay
MI0006500 · 874 served
Tamarac Village
MI0040337 · 873 served
Village of Farwell
MI0002250 · 871 served
Village of Otisville
MI0005050 · 864 served
Stephenson
MI0006380 · 862 served
Oaks of Rockford
MI0040678 · 860 served
Village of Ubly
MI0006710 · 858 served
Pentwater
MI0005260 · 857 served
Bedford Hills
MI0040080 · 850 served
Presque Isle Harbor Water Co.
MI0005575 · 845 served
Lake Chemung Outdoor Resort
MI0003697 · 840 served
Haring Charter Township
MI0003018 · 839 served
Village of Forestville
MI0002360 · 836 served
City of Lake City
MI0003700 · 836 served
Bay View Association
MI0000490 · 831 served
Village of Deckerville
MI0001760 · 830 served
Key Contaminant Concerns in Michigan
Lead
Lead is a naturally occurring heavy metal that was widely used in plumbing infrastructure until it was banned for new installations in 1986. An estimated 9.2 million lead service lines still connect homes to public water mains across the United States, along with millions of homes with lead solder in their internal plumbing.
DBPs
When utilities add chlorine to water to kill pathogens, it reacts with dissolved organic matter — leaves, algae, soil — to produce disinfection byproducts (DBPs). Over 600 DBPs have been identified. The EPA regulates two groups: total trihalomethanes (TTHMs, including chloroform) and haloacetic acids (HAA5). DBP levels tend to be highest in surface water systems and in warm months when organic matter is elevated.
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Data source: Utility data from EPA SDWIS. 667 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-17