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Benton County, MN Water Quality

Water quality data for 6 public water systems serving Benton County, Minnesota — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 6 water systems · 9 cities
✅
Excellent — All Systems Performing Well

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

A

Benton County Earns a A

Benton County: 9 communities across 6 water systems. 100.0% have no open violations.

  • Median lead where detected: 4.00 ppb
  • 5 communities with a lead detection, 4 reporting none detected
  • 2 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
6
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
  • St. George
    4.00 ppb
    No federal limits exceeded on record
    B
  • Langola
    4.00 ppb
    No federal limits exceeded on record
    B
  • Foley
    4.00 ppb
    No federal limits exceeded on record
    B
  • Rice
    Not detected
    No federal limits exceeded on record
    B
  • Watab
    4.00 ppb
    No federal limits exceeded on record
    B
⚠ Needs Attention
  • Sauk Rapids
    Not detected
    PFAS above the limit at 2 of 3 sampling points
    D
  • Sauk Rapids
    Not detected
    PFAS above the limit at 2 of 3 sampling points
    D
  • Minden
    Not detected
    1 significant inspection deficiency
    A
  • St. George
    4.00 ppb
    No federal limits exceeded on record
    B
  • Langola
    4.00 ppb
    No federal limits exceeded on record
    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
5
No Data
4

All Cities in Benton County

Sauk Rapids Not detected D
Foley 4.00 ppb B
Rice Not detected B
Watab 4.00 ppb B
Minden Not detected A
Gilmanton 4.00 ppb B
Sauk Rapids Not detected D
Langola 4.00 ppb B
St. George 4.00 ppb B
Showing 9 cities
No active violations Active violations

About Benton County Drinking Water

Benton County is served by 6 water systems covering 9 communities. No community here has an open violation on record.

Of the communities reporting lead results, 5 recorded a detection, with a median of 4.00 ppb — 27% of the federal action level. 4 reported none detected, which means below the laboratory limit rather than an absence of lead.

2 of 9 communities have PFAS above the limits EPA set in 2024, measured as a running annual average at each sampling point. State inspectors recorded significant deficiencies at 1 of them.

Frequently Asked Questions

Is Benton County tap water safe to drink?▼
No community in Benton County has an open violation on record. 2 of 9 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Benton County?▼
Among communities with a detection the median is 4.00 ppb, 27% of the 15 ppb action level. 4 reported none detected and 0 reported no result.
How many water systems serve Benton County?▼
6 community water systems serve 9 communities here.
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