Plumas County, CA
The federal environmental record for Plumas County (population 19,131): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
4
federal cleanup sites
1
PFAS-detecting water systems
2
TRI facilities
5
open tank releases
Drinking water: PFAS testing
Public water systems serving Plumas 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 |
|---|---|---|
| AMERICAN VALLEY CSD CA3210004 | PFPeA: 4.4 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
2 facilities in Plumas filed TRI reports for 2024, totalling 24k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| SIERRA PACIFIC INDUSTRIES QUINCY DIV | QUINCY | Ammonia, Dioxin and dioxin-like compounds | 24k lb |
| COLLINS PINE CO CHESTER SAWMILL | CHESTER | Lead And Lead Compounds, Dioxin and dioxin-like compounds | 61 lb |
Underground fuel tanks
EPA's UST Finder records 20 tank facilities in Plumas: 60 tanks in service and 0 closed. 76 fuel releases are on record, of which 5 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Plumas 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 Plumas, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- PLUMAS EUREKA STATE HISTORIC PARKBLAIRSDEN
- US FOREST SERV - CAL COPPER COQUINCY
- WALKER MINEQUINCY
- WHITEHORSE LANDFILLQUINCY