Gresham, Oregon Water Quality Report
Water quality data for 3 water systems serving 76,642 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 Gresham, Oregon.
Get Water Quality Alerts
Be the first to know when water quality changes in Gresham.
Compliance & Violations
Active Violations (12)
71
Jul 1, 2025
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (71)
3A
Feb 1, 2025 — Feb 28, 2025
72
Oct 1, 2024
71
Jul 1, 2024
27
Jan 1, 2024 — Dec 31, 2024
3A
May 1, 2023 — May 31, 2023
+ 66 more resolved violations
Frequently Asked Questions
Is Gresham tap water safe to drink?
Gresham'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 Gresham tap water?
0 contaminants have been detected in Gresham's water supply across 3 water systems. See the full contaminant table above for details.
How can I improve my water quality in Gresham?
Install a water filter rated for the specific contaminants found in Gresham's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Gresham have any water quality violations?
Yes, Gresham currently has 12 active violations. See the violations section above for details.