Post Falls, Idaho Water Quality Report
Water quality data for 14 water systems serving 42,179 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (2)
4H
Jul 2, 2025
4H
Jul 2, 2025
Resolved Violations (498)
4H
Jul 2, 2025
4H
Jul 2, 2025
4H
Jul 2, 2025
3A
Nov 1, 2023 — Nov 30, 2023
3A
Nov 1, 2023 — Nov 30, 2023
+ 493 more resolved violations
Frequently Asked Questions
Is Post Falls tap water safe to drink?
Post Falls's water meets all EPA maximum contaminant levels. However, 0 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Post Falls tap water?
0 contaminants have been detected in Post Falls's water supply across 14 water systems. See the full contaminant table above for details.
How can I improve my water quality in Post Falls?
Install a water filter rated for the specific contaminants found in Post Falls's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Post Falls have any water quality violations?
Yes, Post Falls currently has 17 active violations. See the violations section above for details.