Union, Washington Water Quality Report
Water quality data for 27 water systems serving 5,409 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
Get a Free Water Quality Consultation
Connect with a certified water treatment professional in Union, Washington.
Get Water Quality Alerts
Be the first to know when water quality changes in Union.
Compliance & Violations
Resolved Violations (500)
3A
Sep 1, 2025 — Sep 30, 2025
3A
Sep 1, 2025 — Sep 30, 2025
71
Jul 1, 2024
71
Jul 1, 2024
3A
Jun 1, 2023 — Jun 30, 2023
+ 495 more resolved violations
Frequently Asked Questions
Is Union tap water safe to drink?
Union'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 Union tap water?
0 contaminants have been detected in Union's water supply across 27 water systems. See the full contaminant table above for details.
How can I improve my water quality in Union?
Install a water filter rated for the specific contaminants found in Union's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Union have any water quality violations?
Yes, Union currently has 39 active violations. See the violations section above for details.