Winthrop, Washington Water Quality Report
Water quality data for 2 water systems serving 1,445 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (5)
52
Jan 1, 2022
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (121)
71
Jul 1, 2025
3A
Dec 1, 2024 — Dec 31, 2024
3A
Aug 1, 2024 — Aug 31, 2024
71
Jul 1, 2024
3A
Jun 1, 2024 — Jun 30, 2024
+ 116 more resolved violations
Frequently Asked Questions
Is Winthrop tap water safe to drink?
Winthrop'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 Winthrop tap water?
0 contaminants have been detected in Winthrop's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in Winthrop?
Install a water filter rated for the specific contaminants found in Winthrop's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Winthrop have any water quality violations?
Yes, Winthrop currently has 5 active violations. See the violations section above for details.