Thief River Falls, Minnesota

Water Quality Score: 35/100 (Grade F)

Overall Performance

Water Quality Score

35/100

27.0 points below state average

Letter Grade

Poor quality

Performance Tier

poor

Based on EPA standards

Water System Details

System Number

MN1570003

View Full Water Quality Report

Water Quality Metrics

Lead Level

12.2 ppb

EPA Action Level: 15 ppb

✓ Below action level

Nitrate Level

13.6 ppm

EPA MCL: 10 ppm

⚠ Exceeds MCL

PFAS Detection

Not Detected

Forever chemicals

✓ No PFAS detected

EPA Violations

Yes

Health-based violations

⚠ Has violations

Compare to Nearby Rankings

Park Rapids

MN1290011

45/100

Ramsey

MN1020035

45/100

Owatonna

MN1740007

45/100

Detroit Lakes

MN1030006

45/100

CASS LAKE

055294204

45/100

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