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Otter Tail County, MN Water Quality

Water quality data for 18 public water systems serving Otter Tail County, Minnesota — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 18 water systems · 36 cities
✅
Excellent — All Systems Performing Well

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

A

Otter Tail County Earns a A

Otter Tail County: 36 communities across 18 water systems. 100.0% have no open violations.

  • Median lead where detected: 6.00 ppb
  • 14 communities with a lead detection, 22 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 2 with significant inspection deficiencies
  • 100.0% of communities have no open violations
6 ppb
Median Lead Level
County-wide, 90th percentile
18
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
  • Trondhjem
    Not detected
    No federal limits exceeded on record
    B
  • Perham
    3.00 ppb
    No federal limits exceeded on record
    A
  • Battle Lake
    2.00 ppb
    No federal limits exceeded on record
    B
  • Ottertail
    Not detected
    No federal limits exceeded on record
    B
  • Everts
    2.00 ppb
    No federal limits exceeded on record
    B
⚠ Needs Attention
  • Henning
    Not detected
    Copper above the 1,300 ppb action level
    B
  • Henning
    Not detected
    Copper above the 1,300 ppb action level
    B
  • Pelican Rapids
    7.00 ppb
    Copper above the 1,300 ppb action level
    B
  • Pelican
    7.00 ppb
    Copper above the 1,300 ppb action level
    B
  • Dalton
    Not detected
    Copper above the 1,300 ppb action level
    B
County Lead Level — Median 6 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 6 ppb — 40% of the federal action level
Systems by Lead Level
Under 5 ppb
4
5 – 10 ppb
10
No Data
22

All Cities in Otter Tail County

Fergus Falls 8.00 ppb A
Perham 3.00 ppb A
Pelican Rapids 7.00 ppb B
New York Mills Not detected B
Parkers Prairie Not detected B
Battle Lake 2.00 ppb B
Henning Not detected B
Ottertail Not detected B
Underwood Not detected B
Vergas 5.00 ppb B
Deer Creek Not detected B
Dalton Not detected B
Elizabeth Not detected B
Everts 2.00 ppb B
Sverdrup Not detected B
Newton Not detected B
Fergus Falls Not detected B
Compton Not detected A
Lida Not detected B
Buse 8.00 ppb A
Otter Tail Not detected B
Perham 3.00 ppb A
Clitherall Not detected B
Tumuli Not detected B
Pelican 7.00 ppb B
Hobart 5.00 ppb B
Bluffton Not detected A
Candor 5.00 ppb B
Carlisle 8.00 ppb A
Dane Prairie 8.00 ppb A
Elizabeth Not detected B
Henning Not detected B
Aurdal 8.00 ppb A
Parkers Prairie Not detected B
Tordenskjold Not detected B
Trondhjem Not detected B
Showing 36 cities
No active violations Active violations

About Otter Tail County Drinking Water

Otter Tail County is served by 18 water systems covering 36 communities. No community here has an open violation on record.

Of the communities reporting lead results, 14 recorded a detection, with a median of 6.00 ppb — 40% of the federal action level. 22 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 2 of them.

Frequently Asked Questions

Is Otter Tail County tap water safe to drink?▼
No community in Otter Tail County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Otter Tail County?▼
Among communities with a detection the median is 6.00 ppb, 40% of the 15 ppb action level. 22 reported none detected and 0 reported no result.
How many water systems serve Otter Tail County?▼
18 community water systems serve 36 communities here.
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