Walnut Creek, California Water Quality Report
Water quality data for 2 water systems serving 245 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (1)
52
Oct 1, 2022
Resolved Violations (26)
22
Oct 1, 2014 — Oct 31, 2014
22
Oct 1, 2014 — Oct 31, 2014
22
Dec 1, 2010 — Dec 31, 2010
22
Dec 1, 2010 — Dec 31, 2010
22
Sep 1, 2007 — Sep 30, 2007
+ 21 more resolved violations
Frequently Asked Questions
Is Walnut Creek tap water safe to drink?
Walnut Creek'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 Walnut Creek tap water?
0 contaminants have been detected in Walnut Creek's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in Walnut Creek?
Install a water filter rated for the specific contaminants found in Walnut Creek's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Walnut Creek have any water quality violations?
Yes, Walnut Creek currently has 1 active violation. See the violations section above for details.