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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
376–400 of 667City of Corunna
MI0001640 · 2,028 served
James Township
MI0003475 · 2,023 served
Swan Creek Township
MI0006502 · 2,023 served
Village of Kalkaska
MI0003560 · 2,020 served
Lake Odessa
MI0003730 · 2,018 served
Adams Township
MI0000020 · 2,010 served
Caseville Township
MI0001195 · 2,005 served
Newberry Water & Light
MI0004720 · 2,000 served
Bangor
MI0000380 · 2,000 served
Oak Pointe
MI0001002 · 2,000 served
Grass Lake
MI0002830 · 1,986 served
Shelby
MI0006000 · 1,964 served
Lowell Township
MI0003955 · 1,958 served
Laurium
MI0003810 · 1,947 served
Southeast Oakland Township
MI0004877 · 1,923 served
Crystal Falls
MI0001700 · 1,922 served
Berrien Springs
MI0000650 · 1,910 served
New Buffalo
MI0004680 · 1,900 served
Lawton
MI0003830 · 1,900 served
City of Yale
MI0007230 · 1,900 served
Leoni Township
MI0003837 · 1,893 served
Northville Crossing
MI0040657 · 1,890 served
City of Grayling
MI0002840 · 1,884 served
City of Marlette
MI0004110 · 1,875 served
City of Leslie
MI0003840 · 1,872 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.
Michigan Water FAQs
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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