Missoula, Montana Water Quality Report
Water quality data for 80 water systems serving 80,148 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 15.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 150% | Above guideline |
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Compliance & Violations
Active Violations (10)
52
Oct 1, 2025
52
Oct 1, 2025
52
Oct 1, 2025
52
Oct 1, 2025
52
Oct 1, 2025
52
Oct 1, 2025
52
Oct 1, 2025
52
Oct 1, 2025
66
Dec 30, 2024
66
Dec 30, 2024
Resolved Violations (990)
71
Jul 1, 2025
71
Jul 1, 2025
03
Apr 1, 2025 — Jun 30, 2025
03
Apr 1, 2025 — Jun 30, 2025
03
Apr 1, 2025 — Jun 30, 2025
+ 985 more resolved violations
Frequently Asked Questions
Is Missoula tap water safe to drink?
Missoula's water meets all EPA maximum contaminant levels. However, 1 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Missoula tap water?
1 contaminants have been detected in Missoula's water supply across 80 water systems. See the full contaminant table above for details.
How can I improve my water quality in Missoula?
Install a water filter rated for the specific contaminants found in Missoula's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Missoula have any water quality violations?
Yes, Missoula currently has 182 active violations. See the violations section above for details.