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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
351–375 of 667Au Sable Township
MI0000290 · 2,370 served
Village of Pinckney
MI0005322 · 2,353 served
Clinton
MI0001470 · 2,336 served
Hudson
MI0003280 · 2,307 served
L'anse
MI0003670 · 2,300 served
Niles Township
MI0004750 · 2,270 served
Highland Greens Estates
MI0040387 · 2,268 served
Jonesville
MI0003490 · 2,258 served
Morenci
MI0004490 · 2,220 served
City of East Jordan
MI0001970 · 2,215 served
Orchard Lake Village
MI0005031 · 2,194 served
Baraga
MI0000410 · 2,182 served
Sylvan Lake
MI0006530 · 2,155 served
Spaulding Township
MI0006210 · 2,153 served
Manchester
MI0004020 · 2,150 served
Ishpeming Twp - West
MI0003450 · 2,148 served
City of West Branch
MI0007010 · 2,139 served
Hart
MI0003060 · 2,126 served
Bridgman
MI0000850 · 2,096 served
Auburn
MI0000300 · 2,087 served
Birch Run Township
MI0000722 · 2,080 served
Constantine
MI0001600 · 2,075 served
City of Perry
MI0005280 · 2,065 served
Village of St. Charles
MI0006260 · 2,054 served
Taymouth Township
MI0006552 · 2,033 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