Hollis, Oklahoma Water Quality Report
Water quality data for 3 water systems serving 2,533 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (3)
52
Oct 1, 2024
52
Oct 1, 2024
52
Oct 1, 2024
Resolved Violations (497)
01
Apr 1, 2025 — Jun 30, 2025
01
Apr 1, 2025 — Jun 30, 2025
01
Apr 1, 2025 — Jun 30, 2025
01
Apr 1, 2025 — Jun 30, 2025
01
Jan 1, 2025 — Mar 31, 2025
+ 492 more resolved violations
Frequently Asked Questions
Is Hollis tap water safe to drink?
Hollis'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 Hollis tap water?
0 contaminants have been detected in Hollis's water supply across 3 water systems. See the full contaminant table above for details.
How can I improve my water quality in Hollis?
Install a water filter rated for the specific contaminants found in Hollis's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Hollis have any water quality violations?
Yes, Hollis currently has 107 active violations. See the violations section above for details.