Sammamish, Washington Water Quality Report
Water quality data for 3 water systems serving 8,726 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (24)
34
Aug 1, 2012
34
Aug 1, 2012
34
Aug 1, 2012
34
Jun 1, 2012
34
Jun 1, 2012
34
Jun 1, 2012
34
Jun 1, 2012
71
Jul 1, 2001
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (425)
71
Jul 1, 2023
27
Jan 1, 2023 — Dec 31, 2024
27
Jan 1, 2023 — Dec 31, 2024
27
Jan 1, 2023 — Dec 31, 2024
27
Jan 1, 2023 — Dec 31, 2024
+ 420 more resolved violations
Frequently Asked Questions
Is Sammamish tap water safe to drink?
Sammamish'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 Sammamish tap water?
0 contaminants have been detected in Sammamish's water supply across 3 water systems. See the full contaminant table above for details.
How can I improve my water quality in Sammamish?
Install a water filter rated for the specific contaminants found in Sammamish's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Sammamish have any water quality violations?
Yes, Sammamish currently has 24 active violations. See the violations section above for details.