El Dorado County, CA
The federal environmental record for El Dorado County (population 192,215): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
7
federal cleanup sites
3
PFAS-detecting water systems
0
TRI facilities
12
open tank releases
Drinking water: PFAS testing
Public water systems serving El Dorado 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 |
|---|---|---|
| SIERRA TAHOE MAIN LODGE CA0900659 | PFOA: 5 ng/L PFBS: 3 ng/L | above final limit |
| SOUTH TAHOE PUD - MAIN CA0910002 | PFPeA: 22.4 ng/L PFHxA: 16.3 ng/L PFHpA: 6.5 ng/L | above final limit |
| EL DORADO ID - MAIN CA0910001 | PFPeA: 3.2 ng/L | detected |
On a system with detections? Testing and treatment options
Underground fuel tanks
EPA's UST Finder records 81 tank facilities in El Dorado: 225 tanks in service and 12 closed. 197 fuel releases are on record, of which 12 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps El Dorado 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 El Dorado, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- BENNETT SCULPTURE FOUNDRYPLACERVILLE
- EL DORADO HILLS NATURALLY OCCURRING ASBESTOSEL DORADO HILLS
- EL DORADO NATL FORESTEL DORADO
- LAKE TAHOE BASIN MU* MEYERS LANDFILLSOUTH LAKE TAHOE
- OAK RIDGE HIGH ASBESTOSEL DORADO HILLS
- ONEIDAS ST. HOUSE FIRESOUTH LAKE TAHOE
- UPPER TRUCKEE RIVER GASOLINE SPILLSOUTH LAKE TAHOE