F0/100
BIG MOUNTAIN WATER COMPANY — Water Quality Report 2026
Serving 2,435 people · Montana
Water Source
Groundwater
County
—
System ID
MT0000060
Violations
142
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.007 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2014.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About BIG MOUNTAIN WATER COMPANY
Is BIG MOUNTAIN WATER COMPANY water safe to drink?
BIG MOUNTAIN WATER COMPANY water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 142 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has BIG MOUNTAIN WATER COMPANY detected?
1 contaminants were tested in BIG MOUNTAIN WATER COMPANY's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does BIG MOUNTAIN WATER COMPANY have any EPA violations?
Yes, BIG MOUNTAIN WATER COMPANY has 142 EPA violation(s) on record, with the most recent in 2014. Violation types include MCL, MR, Other. 3 are health-based violations.
How many people does BIG MOUNTAIN WATER COMPANY serve?
BIG MOUNTAIN WATER COMPANY serves approximately 2,435 people, Montana. The system provides water to 1 community: Whitefish.
What type of water does BIG MOUNTAIN WATER COMPANY provide?
BIG MOUNTAIN WATER COMPANY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MT0000060.
How does BIG MOUNTAIN WATER COMPANY compare to other utilities in Montana?
BIG MOUNTAIN WATER COMPANY scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Montana state page for a full comparison of water systems.