States › Montana › Glacier County

Glacier County, MT Water Quality

Water quality data for 8 public water systems serving Glacier County, Montana — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 8 water systems · 10 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

Glacier County Earns a B

Glacier County: 10 communities across 8 water systems. 100.0% have no open violations.

  • Median lead where detected: 3.00 ppb
  • 3 communities with a lead detection, 7 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 4 with significant inspection deficiencies
  • 100.0% of communities have no open violations
3 ppb
Median Lead Level
County-wide, 90th percentile
8
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
  • Cut Bank
    Not detected
    No federal limits exceeded on record
    B
  • Santa Rita
    Not detected
    No federal limits exceeded on record
    B
  • Starr School
    Not detected
    2 health-based violations since 2015
    B
  • Little Browning
    2.00 ppb
    2 health-based violations since 2015
    B
  • Hidden Lake Colony
    Not detected
    2 health-based violations since 2015
    B
⚠ Needs Attention
  • North Browning
    Not detected
    Copper above the 1,300 ppb action level
    C
  • South Browning
    Not detected
    Copper above the 1,300 ppb action level
    C
  • Browning
    Not detected
    Copper above the 1,300 ppb action level
    C
  • East Glacier Park Village
    3.00 ppb
    3 significant inspection deficiencies
    C
  • St. Mary
    10.00 ppb
    Lead at 10.00 ppb, above a third of the action level
    B
County Lead Level — Median 3 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 3 ppb — 20% of the federal action level
Systems by Lead Level
Under 5 ppb
2
10 – 15 ppb
1
No Data
7

All Cities in Glacier County

Cut Bank Not detected B
North Browning Not detected C
South Browning Not detected C
Browning Not detected C
East Glacier Park Village 3.00 ppb C
Starr School Not detected B
Little Browning 2.00 ppb B
Hidden Lake Colony Not detected B
Santa Rita Not detected B
St. Mary 10.00 ppb B
Showing 10 cities
No active violations Active violations

About Glacier County Drinking Water

Glacier County is served by 8 water systems covering 10 communities. No community here has an open violation on record.

Of the communities reporting lead results, 3 recorded a detection, with a median of 3.00 ppb — 20% of the federal action level. 7 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 4 of them.

Frequently Asked Questions

Is Glacier County tap water safe to drink?▼
No community in Glacier County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Glacier County?▼
Among communities with a detection the median is 3.00 ppb, 20% of the 15 ppb action level. 7 reported none detected and 0 reported no result.
How many water systems serve Glacier County?▼
8 community water systems serve 10 communities here.
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