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Minnesota Water Quality Rankings

Comprehensive analysis of 0 public water systems across Minnesota. Rankings based on lead levels, nitrate levels, PFAS detection, and EPA violations.

State Average Score

0/100

Across all water systems

Systems Analyzed

0

Public water systems

Last Updated

Oct 19, 2026

Data refreshes daily

Best Water Quality

Top performing water systems

Water Quality Concerns

Systems needing improvement

Methodology

Our water quality score (0-100) is calculated using a weighted formula based on EPA standards:

Lead Levels (30%)

Perfect score below 5 ppb, scales to 0 at EPA action level (15 ppb)

Nitrate Levels (25%)

Perfect score below 3 ppm, scales to 0 at EPA MCL (10 ppm)

EPA Violations (25%)

Zero points for any health-based violations

PFAS Detection (15%)

Bonus points for no PFAS detected, penalty if detected

Letter Grades

A: 90-100B: 80-89C: 70-79D: 60-69F: 0-59

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