B64/100
CORVALLIS, CITY OF — Water Quality Report 2026
Serving 61,468 people · Oregon
Water Source
Surface Water
County
—
System ID
OR4100225
Violations
30
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 320.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2020.
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 CORVALLIS, CITY OF
Is CORVALLIS, CITY OF water safe to drink?
CORVALLIS, CITY OF water receives a grade of B (64/100), which is considered good. Out of 69 contaminants tested, none exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CORVALLIS, CITY OF detected?
69 contaminants were tested in CORVALLIS, CITY OF's water. Notable contaminants include Lead (90th percentile), chlorate. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does CORVALLIS, CITY OF have any EPA violations?
Yes, CORVALLIS, CITY OF has 30 EPA violation(s) on record, with the most recent in 2020. Violation types include MR, MON.
How many people does CORVALLIS, CITY OF serve?
CORVALLIS, CITY OF serves approximately 61,468 people, Oregon.
What type of water does CORVALLIS, CITY OF provide?
CORVALLIS, CITY OF 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 OR4100225.
How does CORVALLIS, CITY OF compare to other utilities in Oregon?
CORVALLIS, CITY OF scores 64/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Oregon state page for a full comparison of water systems.