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Cass County, MN Water Quality

Water quality data for 10 public water systems serving Cass County, Minnesota — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 10 water systems · 22 cities
✅
Excellent — All Systems Performing Well

Water quality across the county is outstanding with minimal violations and very low lead levels.

A

Cass County Earns a A

Cass County: 22 communities across 10 water systems. 100.0% have no open violations.

  • Median lead where detected: 4.00 ppb
  • 8 communities with a lead detection, 14 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 1 with significant inspection deficiencies
  • 100.0% of communities have no open violations
4 ppb
Median Lead Level
County-wide, 90th percentile
10
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
  • Wabedo
    Not detected
    No federal limits exceeded on record
    B
  • Kego
    Not detected
    No federal limits exceeded on record
    B
  • Remer
    Not detected
    No federal limits exceeded on record
    B
  • Walker
    Not detected
    No federal limits exceeded on record
    B
  • Cass Lake
    2.00 ppb
    No federal limits exceeded on record
    B
⚠ Needs Attention
  • Wilson
    4.00 ppb
    Copper above the 1,300 ppb action level
    B
  • Pine River
    4.00 ppb
    Copper above the 1,300 ppb action level
    B
  • Pine River
    4.00 ppb
    Copper above the 1,300 ppb action level
    B
  • Hackensack
    Not detected
    Copper above the 1,300 ppb action level
    B
  • Barclay
    4.00 ppb
    Copper above the 1,300 ppb action level
    B
County Lead Level — Median 4 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 4 ppb — 26.7% of the federal action level
Systems by Lead Level
Under 5 ppb
8
No Data
14

All Cities in Cass County

Walker Not detected B
Pine River 4.00 ppb B
Cass Lake 2.00 ppb B
Pillager Not detected B
Hackensack Not detected B
Backus Not detected B
Remer Not detected B
Pike Bay 2.00 ppb B
Shingobee Not detected B
Barclay 4.00 ppb B
Sylvan Not detected B
East Gull Lake 3.00 ppb B
Powers Not detected B
Longville Not detected B
Bena Not detected B
Walden 4.00 ppb B
Birch Lake Not detected B
Wilson 4.00 ppb B
Kego Not detected B
Pine River 4.00 ppb B
Remer Not detected B
Wabedo Not detected B
Showing 22 cities
No active violations Active violations

About Cass County Drinking Water

Cass County is served by 10 water systems covering 22 communities. No community here has an open violation on record.

Of the communities reporting lead results, 8 recorded a detection, with a median of 4.00 ppb — 27% of the federal action level. 14 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 significant deficiencies at 1 of them.

Frequently Asked Questions

Is Cass County tap water safe to drink?▼
No community in Cass County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Cass County?▼
Among communities with a detection the median is 4.00 ppb, 27% of the 15 ppb action level. 14 reported none detected and 0 reported no result.
How many water systems serve Cass County?▼
10 community water systems serve 22 communities here.
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