CORVALLIS, CITY OF Water Quality Report
Population
61,468
people served
Water Source
🌊 Surface
rivers, lakes, reservoirs
National Rank
Top 43%
of 49,184 US systems
5-Year Record
✅ Clean
no violations
A
Safe
Safety Grade
0 violations in the past 5 years
System Details
- PWSID
- OR4100225
- Population Served
- 61,468
- Water Source
- Surface Water
- Owner
- Local Government
- State
- Oregon
- EPA Region
- 10
Contaminants of Concern
| Contaminant | Status | Violations |
|---|---|---|
| Contaminant 0200 | ⚠ Monitoring/Reporting | 24 |
| Contaminant 0300 | ⚠ Monitoring/Reporting | 12 |
| Total Trihalomethanes (TTHMs) | ⚠ Monitoring/Reporting | 2 |
| Haloacetic Acids (HAA5) | ⚠ Monitoring/Reporting | 2 |
| Contaminant 8000 | ⚠ Monitoring/Reporting | 2 |
| Contaminant 5000 | ⚠ Monitoring/Reporting | 4 |
Violation History
2020
18
2019
16
2017
12
Total violations on record: 46
Service Area
Cities Served
ZIP Codes Served
Recommended Water Filters
Based on contaminants detected in this water system:
Activated Carbon Filter
Effective for chlorine, THMs, pesticides, and taste/odor improvement
Removes: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)
How does this compare?
This systemNational average
Grade A
Avg: B-C
46violations total
164% of national average
National avg: ~28 per system
📍 Mid-to-large system — serves 9× the national average.