State Hub
Minnesota Water Quality
492
Utilities in database
4.6M
Residents served
35%
On private wells
2
Key contaminants tracked
Drinking Water in Minnesota
Minnesota has 492 community water systems serving approximately 4.6 million residents. Primary water sources include groundwater. The most commonly reported contaminants include arsenic, lead. 35% of Minnesota residents rely on private wells. MDH holds primary enforcement authority under the Safe Drinking Water Act.
Utilities in Minnesota
401–425 of 492Cleveland
MN1400001 · 719 served
Mabel
MN1230007 · 715 served
Lake Park
MN1030016 · 714 served
Karlstad
MN1350002 · 713 served
Twin Valley
MN1540008 · 707 served
Buffalo Lake
MN1650003 · 703 served
Hoffman
MN1260006 · 703 served
Riverview Apartment Partnership
MN1270061 · 700 served
Marble
MN1310023 · 699 served
Stockton
MN1850020 · 697 served
Clarks Grove
MN1240005 · 695 served
Ottertail
MN1560032 · 694 served
Hampton
MN1190010 · 691 served
Heron Lake
MN1320002 · 691 served
Cass Lake
MN1110006 · 691 served
Freeport
MN1730013 · 685 served
Hills
MN1670003 · 685 served
Minnesota Lake
MN1220013 · 683 served
Brownsdale
MN1500017 · 682 served
Motley
MN1490003 · 680 served
Greenbush
MN1680002 · 680 served
Lake Benton
MN1410003 · 676 served
Adams
MN1500001 · 672 served
Kasota
MN1400005 · 670 served
Clear Lake
MN1710009 · 669 served
Key Contaminant Concerns in Minnesota
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.
Arsenic
Arsenic (As) occurs naturally in rock and soil, dissolving into groundwater through natural weathering processes. Inorganic arsenic — the form found in drinking water — is a known human carcinogen. The western United States has particularly arsenic-rich geological formations, but elevated levels have been found in 48 states. Arsenic is tasteless and odorless.
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Data source: Utility data from EPA SDWIS. 492 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-19