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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
426–450 of 667White Pigeon
MI0007070 · 1,640 served
Hemlock/richland Township
MI0003110 · 1,632 served
Union City
MI0006720 · 1,630 served
Nashville
MI0004620 · 1,628 served
Three Oaks
MI0006600 · 1,622 served
Northfield Estates
MI0040594 · 1,620 served
Bessemer
MI0000660 · 1,619 served
City of Ovid
MI0005100 · 1,612 served
Oronoko Township
MI0005034 · 1,610 served
City of Harbor Beach
MI0003000 · 1,604 served
South Rockwood
MI0006130 · 1,587 served
Centreville
MI0001310 · 1,579 served
Village of Birch Run
MI0000720 · 1,555 served
Coloma
MI0001530 · 1,555 served
Childs Lake Estates Mhc
MI0040376 · 1,548 served
Quincy
MI0005580 · 1,544 served
Hartland Meadows
MI0040654 · 1,543 served
City of Scottville
MI0005980 · 1,536 served
City of Zilwaukee
MI0007280 · 1,534 served
Village of Shepherd
MI0006030 · 1,515 served
City of Standish
MI0006350 · 1,509 served
Loch Alpine Sanitary Authority
MI0003940 · 1,506 served
Village of Webberville
MI0006970 · 1,503 served
Lake Doster
MI0002925 · 1,492 served
Kawkawlin Metro Dist Water Sup
MI0003570 · 1,480 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