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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
401–425 of 667Royal Oak Township
MI0005840 · 1,869 served
Cidermill Crossings
MI0040679 · 1,863 served
West Olive Estates
MI0040614 · 1,850 served
Crockery Township
MI0001664 · 1,847 served
Decatur
MI0001750 · 1,838 served
City of Tawas City
MI0006540 · 1,827 served
Deerwood Subdivision
MI0001773 · 1,824 served
Cassopolis
MI0001250 · 1,815 served
Wakefield
MI0006830 · 1,808 served
Covert Township
MI0001661 · 1,805 served
Howard City
MI0003240 · 1,800 served
Village of Armada
MI0000240 · 1,794 served
Peninsula Township
MI0005233 · 1,790 served
Lockport Township
MI0003943 · 1,778 served
Village of Capac
MI0001110 · 1,775 served
City of Olivet
MI0004990 · 1,758 served
City of Evart
MI0002190 · 1,742 served
Cedarbrook Estates
MI0040375 · 1,728 served
Sebewaing Light & Water
MI0005990 · 1,721 served
Charlevoix Township
MI0001335 · 1,700 served
Homer
MI0003220 · 1,668 served
City of Montrose
MI0004480 · 1,657 served
Village of Kingsley
MI0003650 · 1,657 served
Arlington Woods
MI0040356 · 1,650 served
Village of Elk Rapids
MI0002090 · 1,642 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