Cochise County, AZ
The federal environmental record for Cochise County (population 124,640): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
1
Superfund NPL sites
3
federal cleanup sites
4
PFAS-detecting water systems
4
TRI facilities
15
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Apache Powder Co. | St. David | on the NPL | 08/30/1990 |
Drinking water: PFAS testing
Public water systems serving Cochise 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 |
|---|---|---|
| ARIZONA WATER CO - BISBEE AZ0402001 | PFPeA: 17 ng/L PFHxA: 10 ng/L PFBS: 10 ng/L | above final limit |
| US ARMY FORT HUACHUCA AZ0402078 | PFHxS: 14.7 ng/L PFOA: 7 ng/L PFOS: 6.5 ng/L | above final limit |
| ARIZONA WATER CO - SIERRA VISTA AZ0402004 | PFHxA: 4.4 ng/L PFPeA: 3 ng/L | detected |
| BELLA VISTA CITY WATER SYSTEM AZ0402010 | PFPeA: 3.5 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
4 facilities in Cochise filed TRI reports for 2024, totalling 48k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| ARIZONA ELECTRIC POWER COOPERATIVE INC | COCHISE | Barium compounds (except for barium sulfate (CAS No. 7727-43-7)), Manganese compounds | 35k lb |
| APACHE NITROGEN PRODUCTS INC | SAINT DAVID | Ammonia, Nitric acid | 10k lb |
| U.S.DOD US ARMY FORT HUACHUCA - RANGES | FORT HUACHUCA | Lead | 1k lb |
| U.S. CBP BRIAN A. TERRY (NACO) BORDER PATROL STN #AZ0040 | BISBEE | Lead | 219 lb |
Underground fuel tanks
EPA's UST Finder records 337 tank facilities in Cochise: 144 tanks in service and 811 closed. 299 fuel releases are on record, of which 15 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Cochise 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 Cochise, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- APACHE NITROGEN PRODUCTS - PLANTST. DAVID
- DOUGLAS RANGEDOUGLAS
- USDOD FORT HUACHUCAFORT HUACHUCA