Umatilla County, OR
The federal environmental record for Umatilla County (population 80,053): 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
3
PFAS-detecting water systems
7
TRI facilities
35
open tank releases
Drinking water: PFAS testing
Public water systems serving Umatilla 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 |
|---|---|---|
| HERMISTON, CITY OF OR4100372 | PFHxS: 12 ng/L PFOS: 12 ng/L PFBS: 10 ng/L | above final limit |
| MILTON-FREEWATER, CITY OF OR4100522 | PFOS: 7.2 ng/L PFHxS: 3.2 ng/L | above final limit |
| PENDLETON, CITY OF OR4100613 | PFHxS: 4.8 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
7 facilities in Umatilla filed TRI reports for 2024, totalling 359k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| LAMB WESTON INC. | HERMISTON | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen sulfide | 337k lb |
| LAKESIDE FOODS INC. | WESTON | Ammonia | 20k lb |
| AMERICAN ROCK PRODUCTS HERMISTON | HERMISTON | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead And Lead Compounds | 2k lb |
| US ARMY NATIONAL GUARD REES TRAINING CENTER RANGES | HERMISTON | Lead | 909 lb |
| LIPPERT COMPONENTS INC. - PLANT #27 | PENDLETON | Chromium, Manganese | 53 lb |
| CHS HERMISTON FEED | HERMISTON | - | 0 lb |
| CLAYTON HERMISTON | HERMISTON | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 395 tank facilities in Umatilla: 206 tanks in service and 904 closed. 199 fuel releases are on record, of which 35 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Umatilla 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 Umatilla, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- BOARDMAN BOMBING RANGEBOARDMAN
- COE-CIVIL MCNARY SUB STATIONUMATILLA
- COLD SPRINGS PRECISION BOMBING RANGE FUDSHERMISTON
- INTERSTATE 84 SOLVENT TANKER SPILLPENDLETON
- LOUISIANA PACIFICPENDLETON
- MCNARY LOCK AND DAMUMATILLA
- NORTH MORROW GROUNDWATERUMATILLA
- UNION PACIFIC RAILROAD (HERMISTON)HERMISTON