Shasta County, CA
The federal environmental record for Shasta County (population 180,366): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
2
Superfund NPL sites
5
federal cleanup sites
1
PFAS-detecting water systems
8
TRI facilities
14
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Afterthought Mine | Bella Vista | on the NPL | 09/05/2024 |
| Iron Mountain Mine | Redding | on the NPL | 09/08/1983 |
Drinking water: PFAS testing
Public water systems serving Shasta 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 |
|---|---|---|
| CITY OF REDDING CA4510005 | PFOA: 16.2 ng/L PFOS: 12.6 ng/L PFHxS: 8.9 ng/L | above final limit |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
8 facilities in Shasta filed TRI reports for 2024, totalling 188k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| KNAUF INSULATION INC. | SHASTA LAKE | Ammonia, Chromium compounds (except for chromite ore mined in the Transvaal Region) | 188k lb |
| J.F. SHEA CONSTRUCTION INC FAWNDALE ROCK & ASPHALT | REDDING | Lead compounds, Propylene | 227 lb |
| J.F. SHEA CONSTRUCTION INC. AGGREGATE PRODUCTS | REDDING | Lead compounds, Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 54 lb |
| CALPORTLAND REDDING CEMENT PLANT | REDDING | Mercury And Mercury Compounds | 9 lb |
| CAPTIVEAIRE SYSTEMS INC | REDDING | - | 0 lb |
| COOK CONCRETE PRODUCTS | REDDING | Lead compounds | 0 lb |
| SIERRA PACIFIC INDUSTRIES BURNEY DIV | BURNEY | Dioxin and dioxin-like compounds | 0 lb |
| SIERRA PACIFIC INDUSTRIES ANDERSON DIV | ANDERSON | Dioxin and dioxin-like compounds | 0 lb |
Underground fuel tanks
EPA's UST Finder records 119 tank facilities in Shasta: 375 tanks in service and 0 closed. 354 fuel releases are on record, of which 14 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Shasta 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 Shasta, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- AFTERTHOUGHT MINEINGOT
- BR-REDDINGSHASTA LAKE
- COPPER MOUNTAIN MINEREDDING
- IRON MOUNTAIN MINEREDDING
- SHASTA TRINITY NAT FORESTREDDING