Grand Coulee, Washington Water Quality Report
Water quality data for 2 water systems serving 1,544 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (3)
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (9)
71
Jul 1, 2010
23
Jan 1, 2004 — Jan 31, 2004
52
Jan 1, 2000 — Jan 1, 2001
42
Jan 1, 1992
42
Jan 1, 1992
+ 4 more resolved violations
Frequently Asked Questions
Is Grand Coulee tap water safe to drink?
Grand Coulee'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 Grand Coulee tap water?
0 contaminants have been detected in Grand Coulee's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in Grand Coulee?
Install a water filter rated for the specific contaminants found in Grand Coulee's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Grand Coulee have any water quality violations?
Yes, Grand Coulee currently has 3 active violations. See the violations section above for details.