States › Minnesota › Polk County

Polk County, MN Water Quality

Water quality data for 12 public water systems serving Polk County, Minnesota — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 12 water systems · 46 cities
✅
Generally Safe — Most Systems Performing Well

The majority of water systems have no active violations and lead levels well below the federal action level.

B

Polk County Earns a B

Polk County: 46 communities across 12 water systems. 100.0% have no open violations.

  • Median lead where detected: 2.00 ppb
  • 33 communities with a lead detection, 13 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 100.0% of communities have no open violations
2 ppb
Median Lead Level
County-wide, 90th percentile
12
Water Systems
Active CWS & NTNCWS
100%
Violation-Free
No active violations on record
How we grade counties: MyWaterIQ uses EPA SDWIS enforcement data — actual MCL violations and lead test results — not the aspirational MCLG targets used by some sites. A grade reflects real compliance history, not theoretical risk. Learn more →

Cities by Water Quality

⭐ Best Performing
  • Brandsvold
    2.00 ppb
    No federal limits exceeded on record
    B
  • Reis
    Not detected
    No federal limits exceeded on record
    B
  • Hubbard
    Not detected
    No federal limits exceeded on record
    B
  • East Grand Forks
    3.00 ppb
    No federal limits exceeded on record
    B
  • Fosston
    2.00 ppb
    No federal limits exceeded on record
    B
⚠ Needs Attention
  • Fairfax
    17.00 ppb
    Lead above the 15 ppb action level
    C
  • Crookston
    17.00 ppb
    Lead above the 15 ppb action level
    C
  • Winger
    Not detected
    Copper above the 1,300 ppb action level
    C
  • Winger
    Not detected
    Copper above the 1,300 ppb action level
    C
  • Huntsville
    2.00 ppb
    Copper above the 1,300 ppb action level
    B
County Lead Level — Median 2 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 2 ppb — 13.3% of the federal action level
Systems by Lead Level
Under 5 ppb
31
10 – 15 ppb
2
No Data
13

All Cities in Polk County

East Grand Forks 3.00 ppb B
Crookston 17.00 ppb C
Fosston 2.00 ppb B
Fertile Not detected B
McIntosh 3.00 ppb B
Huntsville 2.00 ppb B
Fisher Not detected B
Erskine Not detected B
Climax Not detected B
Bygland 2.00 ppb B
Winger Not detected C
Grand Forks 2.00 ppb B
Fisher 2.00 ppb B
Sullivan 2.00 ppb B
Esther 2.00 ppb B
Northland 2.00 ppb B
Knute Not detected B
Rhinehart 2.00 ppb B
Roome 2.00 ppb B
Lowell 2.00 ppb B
Nesbit 2.00 ppb B
Tabor 2.00 ppb B
Beltrami Not detected B
Higdem 2.00 ppb B
Crookston 2.00 ppb B
Nielsville Not detected B
Tynsid 2.00 ppb B
Keystone 2.00 ppb B
Farley 2.00 ppb B
Rosebud 2.00 ppb B
Angus 2.00 ppb B
Sandsville 2.00 ppb B
Vineland 2.00 ppb B
Fanny 2.00 ppb B
Winger Not detected C
Badger Not detected B
Euclid 2.00 ppb B
Garfield Not detected B
Brislet 2.00 ppb B
Gentilly 2.00 ppb B
Parnell 2.00 ppb B
Andover 2.00 ppb B
Fairfax 17.00 ppb C
Hubbard Not detected B
Reis Not detected B
Brandsvold 2.00 ppb B
Showing 46 cities
No active violations Active violations

About Polk County Drinking Water

Polk County is served by 12 water systems covering 46 communities. No community here has an open violation on record.

Of the communities reporting lead results, 33 recorded a detection, with a median of 2.00 ppb — 13% of the federal action level. 13 reported none detected, which means below the laboratory limit rather than an absence of lead.

No community here has PFAS above the federal limit on record. State inspectors recorded no significant deficiencies.

Frequently Asked Questions

Is Polk County tap water safe to drink?▼
No community in Polk County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Polk County?▼
Among communities with a detection the median is 2.00 ppb, 13% of the 15 ppb action level. 13 reported none detected and 0 reported no result.
How many water systems serve Polk County?▼
12 community water systems serve 46 communities here.
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