Wister, Oklahoma Water Quality Report
Water quality data for 4 water systems serving 5,057 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (73)
35
Sep 29, 2025
35
Sep 29, 2025
71
Jul 1, 2025
52
Jul 1, 2025
52
Jul 1, 2025
35
Jun 30, 2025
35
Apr 1, 2025
35
Apr 1, 2025
35
Apr 1, 2025
75
Nov 8, 2024
75
Oct 19, 2024
2E
Oct 17, 2024
2E
Oct 17, 2024
4G
Oct 17, 2024
4G
Oct 17, 2024
52
Oct 1, 2024
52
Oct 1, 2024
52
Oct 1, 2024
35
Sep 29, 2024
35
Sep 29, 2024
75
Aug 1, 2024
71
Jul 1, 2024
71
Jul 1, 2024
35
Jun 30, 2024
35
Jun 30, 2024
75
Jun 17, 2024
75
Jun 17, 2024
75
May 24, 2024
35
Mar 31, 2024
35
Mar 31, 2024
35
Dec 30, 2023
35
Dec 30, 2023
75
Oct 30, 2023
75
Oct 20, 2023
72
Oct 2, 2023
72
Oct 2, 2023
35
Sep 29, 2023
35
Sep 29, 2023
75
Sep 4, 2023
35
Jun 30, 2023
35
Jun 30, 2023
75
May 26, 2023
75
May 19, 2023
75
Jan 22, 2023
75
Jan 22, 2023
75
Jan 22, 2023
75
Jun 8, 2022
75
Mar 30, 2022
75
Dec 23, 2021
75
Aug 31, 2021
75
May 31, 2021
75
Mar 2, 2021
75
Jan 19, 2021
75
Aug 19, 2018
75
Aug 19, 2018
75
Aug 19, 2018
75
May 24, 2018
75
May 24, 2018
75
May 24, 2018
75
May 24, 2018
75
May 24, 2018
75
May 24, 2018
75
May 24, 2018
75
May 24, 2018
75
Apr 21, 2018
75
Apr 21, 2018
75
Apr 21, 2018
75
Apr 21, 2018
75
Apr 21, 2018
75
Apr 21, 2018
75
Apr 21, 2018
75
Apr 21, 2018
75
Apr 21, 2018
Resolved Violations (427)
02
Jul 1, 2025 — Sep 30, 2025
02
Jul 1, 2025 — Sep 30, 2025
02
Jul 1, 2025 — Sep 30, 2025
27
Jun 1, 2025 — Jun 30, 2025
27
Jun 1, 2025 — Jun 30, 2025
+ 422 more resolved violations
Frequently Asked Questions
Is Wister tap water safe to drink?
Wister'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 Wister tap water?
0 contaminants have been detected in Wister's water supply across 4 water systems. See the full contaminant table above for details.
How can I improve my water quality in Wister?
Install a water filter rated for the specific contaminants found in Wister's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Wister have any water quality violations?
Yes, Wister currently has 128 active violations. See the violations section above for details.