A83/100
OREGON CITY — Water Quality Report 2026
Serving 19,950 people · Ohio
Water Source
Surface Water
County
—
System ID
OH4800911
Violations
5
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 38.00 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: December 30, 2024 – July 8, 2025Enforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About OREGON CITY
Is OREGON CITY water safe to drink?
OREGON CITY water receives a grade of A (83/100), which is considered excellent. Out of 70 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has OREGON CITY detected?
70 contaminants were tested in OREGON CITY's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does OREGON CITY have any EPA violations?
Yes, OREGON CITY has 5 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, MR, MCL. 1 are health-based violations.
How many people does OREGON CITY serve?
OREGON CITY serves approximately 19,950 people, Ohio.
What type of water does OREGON CITY provide?
OREGON CITY sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is OH4800911.
How does OREGON CITY compare to other utilities in Ohio?
OREGON CITY scores 83/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Ohio state page for a full comparison of water systems.