Comprehensive analysis of 79 public water systems across Minnesota. Rankings based on lead levels, nitrate levels, PFAS detection, and EPA violations.
62/100
Across all water systems
79
Public water systems
Aug 15, 2026
Data refreshes daily
View water quality rankings for specific regions of Minnesota
Top performing water systems
ST CLOUD
MN1730055
85/100
PRIOR LAKE
MN1700020
85/100
Belle Plaine
MN1700001
75/100
Benson
MN1760008
75/100
OAKDALE
MN1820027
75/100
Systems needing improvement
Monticello
MN1860013
30/100
ST CLOUD
MN1730031
35/100
Owatonna
MN1740007
45/100
Minneapolis
MN1820038
55/100
Minnetonka
MN1820017
55/100
Our water quality score (0-100) is calculated using a weighted formula based on EPA standards:
Perfect score below 5 ppb, scales to 0 at EPA action level (15 ppb)
Perfect score below 3 ppm, scales to 0 at EPA MCL (10 ppm)
Zero points for any health-based violations
Bonus points for no PFAS detected, penalty if detected
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