Mendocino County, CA
The federal environmental record for Mendocino County (population 89,108): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
5
federal cleanup sites
1
PFAS-detecting water systems
1
TRI facilities
44
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Coast Wood Preserving | Ukiah | on the NPL | 09/08/1983 |
Drinking water: PFAS testing
Public water systems serving Mendocino 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 |
|---|---|---|
| UKIAH, CITY OF CA2310003 | 6:2 FTS: 17.8 ng/L PFBA: 9.2 ng/L PFOS: 7.4 ng/L | above final limit |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
1 facilities in Mendocino filed TRI reports for 2024, totalling 60 lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| MENDOCINO FOREST PRODUCTS CO. LLC | UKIAH | Copper And Copper Compounds | 60 lb |
Underground fuel tanks
EPA's UST Finder records 62 tank facilities in Mendocino: 165 tanks in service and 2 closed. 424 fuel releases are on record, of which 44 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Mendocino 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 Mendocino, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- ABEX CORP REMCO HYDRAULICS PLTWILLITS
- CITY OF 10,000 BUDDHISTSTALMAGE
- COAST WOOD PRESERVINGUKIAH
- POINT ARENA AIR FORCE STATIONPT ARENA
- REDWOOD EMPIRE CLEANERSWILLITS