State Hub
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
176–200 of 667City of Center Line
MI0001290 · 8,257 served
City of Mason
MI0004170 · 8,252 served
Ludington
MI0003960 · 8,184 served
Hillsdale
MI0003170 · 8,163 served
St Joseph
MI0006310 · 7,930 served
Three Rivers
MI0006610 · 7,905 served
City of St. Johns
MI0006300 · 7,896 served
Hudsonville
MI0003290 · 7,708 served
Ada Township
MI0000012 · 7,584 served
Iron Mountain
MI0003400 · 7,500 served
Milan
MI0004380 · 7,363 served
Hastings
MI0003090 · 7,350 served
River Rouge
MI0005690 · 7,224 served
Spsm
MI0006370 · 7,166 served
Rockford
MI0005730 · 7,160 served
Muskegon Co Eastside Water System
MI0004590 · 7,135 served
Rochester
MI0005720 · 7,130 served
Marshall
MI0004150 · 7,088 served
Oscoda Township
MI0005040 · 6,997 served
City of St. Louis
MI0006320 · 6,976 served
Superior Township
MI0006490 · 6,830 served
Benton Charter Township
MI0000605 · 6,768 served
Ira Township
MI0003390 · 6,510 served
Ishpeming
MI0003440 · 6,470 served
Village of Milford
MI0004390 · 6,366 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
Quick Links
Data source: Utility data from EPA SDWIS. 667 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-17