Owyhee County, ID
The federal environmental record for Owyhee County (population 12,722): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
12
federal cleanup sites
0
PFAS-detecting water systems
3
TRI facilities
4
open tank releases
Drinking water: PFAS testing
No public water system serving Owyhee 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)
3 facilities in Owyhee filed TRI reports for 2024, totalling 3.7M lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| US ECOLOGY IDAHO INC. | GRAND VIEW | Zinc compounds, Copper And Copper Compounds | 3.7M lb |
| AMVAC CHEMICAL | MARSING | Bifenthrin, Quintozene | 1k lb |
| HOMEDALE BEAM & DECK PLANT | HOMEDALE | Phenol | 186 lb |
Underground fuel tanks
EPA's UST Finder records 59 tank facilities in Owyhee: 31 tanks in service and 125 closed. 24 fuel releases are on record, of which 4 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Owyhee 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 Owyhee, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- JORDAN CREEK HISTORIC MINING AREASILVER CITY
- KINROSS DELAMAR MINEMURPHY
- US ECOLOGY IDAHO INCGRAND VIEW
- USDOI BLM BROWNS GULCHBRUNEAU
- USDOI BLM BRUNEAU OPEN DUMPBRUNEAU
- USDOI BLM HULET DUMPMURPHY
- USDOI BLM MAC D MERCURY MINE & RETORT SITEHOMEDALE
- USDOI BLM OWYHEE CO GRANDVIEW LANDFILLBRUNEAU
- USDOI BLM OWYHEE CO MARSING/HOMEDALE LFMARSING-HOMEDALE
- USDOI BLM OWYHEE CO WILSON CREEK LDFLMARSING
- USDOI BLM PESTICIDE DUMP MURPHYMURPHY
- USDOI BLM PESTICIDE DUMP SITE, REYNOLDSREYNOLDS