Humboldt County, CA
The federal environmental record for Humboldt County (population 133,985): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
2
Superfund NPL sites
4
federal cleanup sites
0
PFAS-detecting water systems
2
TRI facilities
31
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Celtor Chemical Works | Hoopa | deleted | 09/08/1983 |
| Copper Bluff Mine | Hoopa | on the NPL | 05/15/2019 |
Drinking water: PFAS testing
No public water system serving Humboldt 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)
2 facilities in Humboldt filed TRI reports for 2024, totalling 96k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| CRYSTAL CREAMERY INC. DBA HUMBOLDT CREAMERY | FORTUNA | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 70k lb |
| PG&E HUMBOLDT BAY POWER PLANT | EUREKA | Acetaldehyde, Ammonia | 26k lb |
Underground fuel tanks
EPA's UST Finder records 87 tank facilities in Humboldt: 229 tanks in service and 32 closed. 628 fuel releases are on record, of which 31 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Humboldt as Zone 3, the lowest predicted indoor radon (under 2 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 Humboldt, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- CELTOR CHEMICAL WORKSHOOPA
- NAVAL FACILITY CENTERVILLE BEACHFERNDALE
- SIMPSON PLYWOOD MILL (OLD)EUREKA
- SIX RIVERS NAT FORESTEUREKA