Missoula County, MT
The federal environmental record for Missoula County (population 121,849): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
2
Superfund NPL sites
8
federal cleanup sites
0
PFAS-detecting water systems
4
TRI facilities
22
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Milltown Reservoir Sediments | Milltown | on the NPL | 09/08/1983 |
| Smurfit-Stone Mill | Missoula | proposed | - |
Drinking water: PFAS testing
No public water system serving Missoula reported a PFAS detection in the UCMR5 national testing round. Systems serving under 3,300 people were only sampled in part, so absence from this table is not proof of absence in the water.
Facilities reporting toxic releases (2024)
4 facilities in Missoula filed TRI reports for 2024, totalling 32k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| HEXION INC. | MISSOULA | Formaldehyde, Methanol | 16k lb |
| ROSEBURG FOREST PRODUCTS CO. - MISSOULA PARTICLEBOARD | MISSOULA | Methanol, Lead | 12k lb |
| PHILLIPS 66 MISSOULA PRODUCTS TERMINAL | MISSOULA | n-Hexane, Toluene | 4k lb |
| JTL GROUP MISSOULA (DBA KNIFE RIVER-MISSOULA) | MISSOULA | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Polycyclic aromatic compounds | 58 lb |
Underground fuel tanks
EPA's UST Finder records 403 tank facilities in Missoula: 269 tanks in service and 896 closed. 314 fuel releases are on record, of which 22 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Missoula as Zone 1, the highest predicted indoor radon levels (over 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 Missoula, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- BURLINGTON NORTHERN FUELING SITE-MISSMISSOULA
- CLARK FORK RIVER BASINMISSOULA (ALSO OTHERS)
- M2GREEN REDEVELOPMENTMISSOULA
- MILLTOWN RESERVOIR SEDIMENTSMILLTOWN
- MISSOULA WHITE PINEMISSOULA
- MONTANA AIR NATIONAL GUARD OMS #2MISSOULA
- PRECIOUS METALS PLATING HUDBONNER
- USDA USFS R01 MISSOULA REG FIELD SVC FACILITYMISSOULA