Delta County, CO
The federal environmental record for Delta County (population 31,746): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
2
federal cleanup sites
1
PFAS-detecting water systems
0
TRI facilities
2
open tank releases
Drinking water: PFAS testing
Public water systems serving Delta 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 |
|---|---|---|
| DELTA CITY OF CO0115205 | PFBA: 8.3 ng/L | detected |
On a system with detections? Testing and treatment options
Underground fuel tanks
EPA's UST Finder records 101 tank facilities in Delta: 50 tanks in service and 222 closed. 71 fuel releases are on record, of which 2 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Delta as Zone 1, the highest predicted indoor radon levels (over 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 Delta, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- DELTA CLEANERSDELTA
- DELTA COUNTY LANDFILLECKERT