B63/100
MISSOULA WATER — Water Quality Report 2026
Serving 68,200 people · Montana
Water Source
Groundwater
County
—
System ID
MT0000294
Violations
29
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.022 mg/L | 0.015 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2017.
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 MISSOULA WATER
Is MISSOULA WATER water safe to drink?
MISSOULA WATER water receives a grade of B (63/100), which is considered good. Out of 73 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has MISSOULA WATER detected?
73 contaminants were tested in MISSOULA WATER's water. Notable contaminants include Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does MISSOULA WATER have any EPA violations?
Yes, MISSOULA WATER has 29 EPA violation(s) on record, with the most recent in 2017. Violation types include MR.
How many people does MISSOULA WATER serve?
MISSOULA WATER serves approximately 68,200 people, Montana. The system provides water to 1 community: Missoula.
What type of water does MISSOULA WATER provide?
MISSOULA WATER sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MT0000294.
How does MISSOULA WATER compare to other utilities in Montana?
MISSOULA WATER scores 63/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Montana state page for a full comparison of water systems.