Union, Missouri Water Quality Report
Water quality data for 10 water systems serving 13,431 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (13)
45
Sep 27, 2025
71
Jul 1, 2025
72
Jul 1, 2025
71
Jul 1, 2025
4G
Oct 17, 2024
4G
Oct 17, 2024
4G
Oct 17, 2024
4G
Oct 17, 2024
66
Oct 1, 2024
75
Dec 14, 2023
75
Nov 7, 2023
75
Nov 4, 2021
75
Dec 2, 2019
Resolved Violations (487)
3A
Feb 1, 2025 — Feb 28, 2025
3A
Feb 1, 2025 — Feb 28, 2025
3A
Feb 1, 2025 — Feb 28, 2025
3A
Feb 1, 2025 — Feb 28, 2025
3A
Nov 1, 2024 — Nov 30, 2024
+ 482 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 10 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 187 active violations. See the violations section above for details.