Columbia County, OR
The federal environmental record for Columbia County (population 53,880): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
8
federal cleanup sites
1
PFAS-detecting water systems
5
TRI facilities
4
open tank releases
Drinking water: PFAS testing
Public water systems serving Columbia with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.
| System | Highest results | Reading |
|---|---|---|
| ST HELENS, CITY OF OR4100724 | PFBS: 15.5 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
5 facilities in Columbia filed TRI reports for 2024, totalling 6.5M lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| DYNO NOBEL- ST.HELENS PLANT | DEER ISLAND | Ammonia, Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 6.3M lb |
| PGE BEAVER PLANT & PORT WESTWARD PLANT | CLATSKANIE | Ammonia, Acetaldehyde | 123k lb |
| US GYPSUM CO | RAINIER | Mercury And Mercury Compounds, Lead And Lead Compounds | 8 lb |
| CONRAD WOOD PRESERVING CO | RAINIER | - | 0 lb |
| COLUMBIA PACIFIC BIO-REFINERY | CLATSKANIE | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 147 tank facilities in Columbia: 50 tanks in service and 321 closed. 80 fuel releases are on record, of which 4 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Columbia as Zone 2, moderate predicted indoor radon (2 to 4 pCi/L average). Radon and air quality are covered in depth on lung.com.
The record for one specific address
County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.
Get the report - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Columbia, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- ARMSTRONG WORLD INDUSTRIESSAINT HELENS
- BOISE CASCADE VENEER MILL SITEST HELENS
- BOISE WHITE PAPERSAINT HELENS
- GOBLE COLUMBIA RIVER SEDIMENTS SITEGOBLE
- LST-1166RAINIER
- MILLER PASTURE LANDSSAINT HELENS
- MULTNOMAH PLYWOOD CORPSAINT HELENS
- PORT OF ST. HELENS CREOSOTE SITEST HELENS