States › Minnesota › Lake County

Lake County, MN Water Quality

Water quality data for 4 public water systems serving Lake County, Minnesota — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 4 water systems · 6 cities
✅
Excellent — All Systems Performing Well

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

A

Lake County Earns a A

Lake County: 6 communities across 4 water systems. 100.0% have no open violations.

  • Median lead where detected: 6.00 ppb
  • 3 communities with a lead detection, 3 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
4
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
  • Beaver Bay
    Not detected
    No federal limits exceeded on record
    B
  • Fall Lake
    3.00 ppb
    No federal limits exceeded on record
    B
  • Two Harbors
    6.00 ppb
    Lead at 6.00 ppb, above a third of the action level
    A
  • Silver Creek
    6.00 ppb
    Lead at 6.00 ppb, above a third of the action level
    A
  • Beaver Bay
    Not detected
    2 significant inspection deficiencies
    B
⚠ Needs Attention
  • Beaver Bay
    Not detected
    2 significant inspection deficiencies
    B
  • Silver Bay
    Not detected
    2 significant inspection deficiencies
    B
  • Two Harbors
    6.00 ppb
    Lead at 6.00 ppb, above a third of the action level
    A
  • Silver Creek
    6.00 ppb
    Lead at 6.00 ppb, above a third of the action level
    A
  • Beaver Bay
    Not detected
    No federal limits exceeded on record
    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
1
5 – 10 ppb
2
No Data
3

All Cities in Lake County

Two Harbors 6.00 ppb A
Silver Bay Not detected B
Beaver Bay Not detected B
Silver Creek 6.00 ppb A
Fall Lake 3.00 ppb B
Beaver Bay Not detected B
Showing 6 cities
No active violations Active violations

About Lake County Drinking Water

Lake County is served by 4 water systems covering 6 communities. No community here has an open violation on record.

Of the communities reporting lead results, 3 recorded a detection, with a median of 6.00 ppb — 40% of the federal action level. 3 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 Lake County tap water safe to drink?▼
No community in Lake County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Lake County?▼
Among communities with a detection the median is 6.00 ppb, 40% of the 15 ppb action level. 3 reported none detected and 0 reported no result.
How many water systems serve Lake County?▼
4 community water systems serve 6 communities here.
← Back to Minnesota water quality overview