Sisters, Oregon Water Quality Report
Water quality data for 7 water systems serving 6,089 people.
Water Source
Detected Contaminants
No contaminant data available for this location.
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Compliance & Violations
Active Violations (8)
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (351)
71
Jul 1, 2025
71
Jul 1, 2025
72
Oct 1, 2024
3A
Jul 1, 2024 — Jul 31, 2024
72
Oct 1, 2023
+ 346 more resolved violations
Frequently Asked Questions
Is Sisters tap water safe to drink?
Sisters'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 Sisters tap water?
0 contaminants have been detected in Sisters's water supply across 7 water systems. See the full contaminant table above for details.
How can I improve my water quality in Sisters?
Install a water filter rated for the specific contaminants found in Sisters's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Sisters have any water quality violations?
Yes, Sisters currently has 8 active violations. See the violations section above for details.