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
51–75 of 492Willmar
MN1340016 · 21,045 served
New Hope
MN1270040 · 20,963 served
Northfield
MN1660010 · 20,790 served
South Saint Paul
MN1190020 · 20,664 served
Sartell
MN1730036 · 20,300 served
Elk River
MN1710004 · 19,532 served
Hopkins
MN1270016 · 19,462 served
Stillwater
MN1820024 · 19,462 served
Otsego
MN1860026 · 19,000 served
Albert Lea
MN1240001 · 18,492 served
Lino Lakes
MN1020023 · 17,859 served
Anoka
MN1020001 · 17,798 served
Ramsey
MN1020035 · 17,705 served
Buffalo
MN1860005 · 16,711 served
Red Wing
MN1250013 · 16,459 served
Hibbing
MN1690022 · 16,028 served
Bemidji
MN1040002 · 15,147 served
Monticello
MN1860012 · 15,087 served
Alexandria
MN1210001 · 15,000 served
Hutchinson
MN1430004 · 14,900 served
Brainerd
MN1180002 · 14,670 served
Robbinsdale
MN1270046 · 14,646 served
North Mankato
MN1520005 · 14,448 served
Rogers
MN1270047 · 14,430 served
Fergus Falls
MN1560014 · 14,194 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.
Minnesota Water FAQs
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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