Pinal County, AZ
The federal environmental record for Pinal County (population 484,239): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
9
federal cleanup sites
4
PFAS-detecting water systems
33
TRI facilities
22
open tank releases
Drinking water: PFAS testing
Public water systems serving Pinal 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 |
|---|---|---|
| JOHNSON UTIL - ANTHEM AT MERRILL RANCH AZ0411136 | PFPeA: 40 ng/L PFBS: 24 ng/L PFHxA: 22 ng/L | above final limit |
| ARIZONA WATER CO - PINAL VALLEY AZ0411009 | PFBS: 91.1 ng/L PFPeA: 20.8 ng/L PFBA: 19.9 ng/L | detected |
| FLORENCE WATER COMPANY AZ0411017 | PFBS: 60 ng/L PFBA: 9 ng/L PFHxS: 7 ng/L | detected |
| LAGO DEL ORO WATER COMPANY AZ0411117 | PFPeA: 6.5 ng/L PFHxA: 4.1 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
33 facilities in Pinal filed TRI reports for 2024, totalling 1.3M lb released. The 25 largest by volume:
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| ASARCO LLC RAY MINE OPERATIONS | KEARNY | Lead compounds, Chromium | 1.0M lb |
| CASA GRANDE DAIRY PRODUCTS LLC | CASA GRANDE | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 59k lb |
| KOHLER CO. CASA GRANDE | CASA GRANDE | Styrene | 58k lb |
| ARIZONA ENVIRONMENTAL CONTAINER CORP | ELOY | Styrene | 50k lb |
| ABBOTT NUTRITION A DIV OF ABBOTT LABORATORIES | CASA GRANDE | Sulfuryl fluoride | 26k lb |
| HEXCEL CORP | CASA GRANDE | Phenol, N-Methyl-2-pyrrolidone | 21k lb |
| MESA FULLY FORMED LLC-COOLIDGE | COOLIDGE | Styrene | 9k lb |
| FRITO-LAY INC | CASA GRANDE | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 5k lb |
| ARMY NAT GUARD FLORENCE TRAINING RANGE | FLORENCE | Lead | 5k lb |
| FRANKLIN FOODS WEST INC. | CASA GRANDE | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 4k lb |
| ACO POLYMER PRODUCTS INC | CASA GRANDE | Styrene | 3k lb |
| KLOECKNER METALS CORP | APACHE JUNCTION | Manganese, Chromium | 1k lb |
| LUCID USA INC. | CASA GRANDE | Xylene (mixed isomers), Methanol | 1k lb |
| ECOBAT RESOURCES ARIZONA | CASA GRANDE | Lead | 708 lb |
| DAISY BRAND | CASA GRANDE | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 380 lb |
| FABRICATED PRODUCTS INC DBA SEAFAB METALS CO | CASA GRANDE | Lead | 157 lb |
| WESTERN EMULSIONS COOLIDGE | COOLIDGE | Polycyclic aromatic compounds, Lead | 132 lb |
| WRIGHT ASPHALT PRODUCTS - CASA GRANDE | CASA GRANDE | Polycyclic aromatic compounds, Benzo[g,h,i]perylene | 105 lb |
| SCHUFF STEEL CO - ELOY | ELOY | Manganese, Chromium | 33 lb |
| SACATON BATCH PLANT #11 | SACATON | Lead | 7 lb |
| HASA INC | ELOY | Chlorine | 5 lb |
| VULCAN MATERIALS CO QUEEN CREEK PLANT | FLORENCE | Polycyclic aromatic compounds, Benzo[g,h,i]perylene | 0 lb |
| MARTIN MARIETTA ARIZONA LLC - APACHE JUNCTION PLANT | APACHE JUNCTION | Lead | 0 lb |
| CEMEX APACHE JUNCTION PLANT | APACHE JUNCTION | Lead | 0 lb |
| MARTIN MARIETTA ARIZONA LLC - COOLIDGE PLANT | FLORENCE | Lead, Polycyclic aromatic compounds | 0 lb |
Underground fuel tanks
EPA's UST Finder records 487 tank facilities in Pinal: 301 tanks in service and 1,142 closed. 451 fuel releases are on record, of which 22 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Pinal 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 Pinal, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- ARMY NAT GUARD FLORENCE TRAINING RANGEFLORENCE
- ARMY NAT GUARD FLORENCE TRAINING RANGEFLORENCE
- CYPRUS TOHONO COPPER MINECASA GRANDE
- ENVIRONMENTAL WASTE ENTPR INCELOY
- GILA RIVER INDIAN RESERVATIONMARICOPA
- GILA RIVER SITE #2GILA RIVER INDIAN RESV
- KOCIDE CHEMICALCASA GRANDE
- ORACLE RIDGE MINEORACLE
- USDOI BIA SAN CARLOS IRRIGATION PROJECTCOOLIDGE