Columbia Water Quality Report
6 cities ranked · Average grade: D+ · Oregon
Avg Score
51
Cities Ranked
6
Health Violations
6
PFAS Detected
1
51
County avg score
6
Cities ranked
17%
A or B grade
83%
D or F grade
6
Health violations
1
PFAS detected
Grade Distribution
How Columbia cities scored
A
0
0%
Excellent
B
1
17%
Good
C
0
0%
Fair
D
3
50%
Poor
F
2
33%
Failing
Comparison
County vs Oregon average
▼ 11.3 pts below state average
City Map
Water quality across Columbia
Each dot is a city, colored by grade. Click any city to view its full report.
Highlights
Top & bottom cities in Columbia
Worst cities
County context
18.7%
of residents on fluoridated water (CDC, 2020)
75,753
lbs/yr to surface water · top 10 TRI facilities
Industrial pollution
Top industrial polluters in Columbia
Industrial polluters nearby
Facilities reporting the most surface-water releases in Columbia, 2023.
Total reported releases to surface water: 75,753 lbs
| Facility | Top chemical | To surface water (lbs/yr) |
|---|---|---|
DYNO NOBEL- ST.HELENS PLANT DEER ISLAND, OR97054 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 75,753 |
COLUMBIA PACIFIC BIO-REFINERY CLATSKANIE, OR97016 | — | — |
PGE BEAVER PLANT & PORT WESTWARD PLANT CLATSKANIE, OR97016 | — | — |
CONRAD WOOD PRESERVING CO RAINIER, OR97048 | — | — |
US GYPSUM CO RAINIER, OR97048 | — | — |
Source: EPA Toxic Release Inventory (TRI) 2023
Full Rankings
All 6 cities in Columbia
| # | City | Grade | Score | Score | Population | Violations | Issues |
|---|---|---|---|---|---|---|---|
| 1 | Columbia City | B | 77.3 | 2K | 58 | Health Unresolved | |
| 2 | Clatskanie | D | 49 | 3K | 1126 | Health Unresolved | |
| 3 | Vernonia | D | 49 | 2K | 330 | Health Unresolved | |
| 4 | Rainier | D | 45 | 3K | 1167 | Health Unresolved | |
| 5 | Scappoose | F | 43.9 | 10K | 1636 | Health Unresolved | |
| 6 | St Helens | F | 41.9 | 18K | 995 | Health Unresolved |