Butte County, CA
The federal environmental record for Butte County (population 207,172): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
3
Superfund NPL sites
8
federal cleanup sites
4
PFAS-detecting water systems
0
TRI facilities
7
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Koppers Co., Inc. (Oroville Plant) | Oroville | on the NPL | 09/21/1984 |
| Louisiana-Pacific Corp. | Oroville | deleted | 06/10/1986 |
| Western Pacific Railroad Co. | Oroville | deleted | 08/30/1990 |
Drinking water: PFAS testing
Public water systems serving Butte 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 |
|---|---|---|
| CAL-WATER SERVICE CO.-CHICO CA0410002 | PFOS: 22.5 ng/L PFHxS: 22.1 ng/L PFBS: 9.6 ng/L | above final limit |
| CITY OF GRIDLEY CA0410004 | PFHxS: 12.8 ng/L PFOS: 10.5 ng/L PFNA: 9.9 ng/L | above final limit |
| THERMALITO WATER & SEWER DIST CA0410008 | PFOS: 4.6 ng/L | above final limit |
| CAL-WATER SERVICE CO.-OROVILLE CA0410005 | PFBA: 5.7 ng/L | detected |
On a system with detections? Testing and treatment options
Underground fuel tanks
EPA's UST Finder records 101 tank facilities in Butte: 298 tanks in service and 0 closed. 289 fuel releases are on record, of which 7 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Butte 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 Butte, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- BIG BEND MINEOROVILLE
- FIRST AVENUE CLEANERSCHICO
- FLAIR CUSTOM CLEANERSCHICO
- KOPPERS CO., INC. (OROVILLE PLANT)OROVILLE
- LOUISIANA-PACIFIC CORP.OROVILLE
- NORGE VILLAGE CLEANERSCHICO
- VICTOR SITECHICO
- WESTERN PACIFIC RAILROAD CO.OROVILLE