Chehalis, Washington Water Quality Report
Water quality data for 11 water systems serving 13,480 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, 2024
71
Jul 1, 2024
3A
Jul 1, 2024 — Jul 31, 2024
71
Jul 1, 2024
+ 495 more resolved violations
Frequently Asked Questions
Is Chehalis tap water safe to drink?
Chehalis'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 Chehalis tap water?
0 contaminants have been detected in Chehalis's water supply across 11 water systems. See the full contaminant table above for details.
How can I improve my water quality in Chehalis?
Install a water filter rated for the specific contaminants found in Chehalis's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Chehalis have any water quality violations?
Yes, Chehalis currently has 15 active violations. See the violations section above for details.