Walla Walla, Washington Water Quality Report
Water quality data for 15 water systems serving 48,907 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Resolved Violations (500)
71
Jul 1, 2025
71
Jul 1, 2025
71
Jul 1, 2024
03
Jan 1, 2024 — Dec 31, 2024
03
Jan 1, 2024 — Dec 31, 2024
+ 495 more resolved violations
Frequently Asked Questions
Is Walla Walla tap water safe to drink?
Walla Walla'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 Walla Walla tap water?
0 contaminants have been detected in Walla Walla's water supply across 15 water systems. See the full contaminant table above for details.
How can I improve my water quality in Walla Walla?
Install a water filter rated for the specific contaminants found in Walla Walla's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Walla Walla have any water quality violations?
Yes, Walla Walla currently has 12 active violations. See the violations section above for details.