UST Check → counties → Arizona → Pinal
Underground storage tanks & leak sites in Pinal County, AZ
Every figure below is from EPA UST Finder — the EPA-compiled national registry of state-reported underground storage tanks — county aggregates as published by EPA.
487registered tank facilities
301open tanks
1,142closed tanks
451leak incidents on record
22cleanups still open
22 leak cleanups in
Pinal County are still open — the state has not closed the case.
An open cleanup near a property you're buying or lending on is a findable, checkable fact: it appears in a
per-address screen with distance and the registry record.
Largest registered facilities
By open-tank count, from the facility-level registry. Every fact is attributed to the EPA record (linked ID); something wrong — use the correction path in the footer and we'll fix or remove it promptly.
| Facility | City | Open / closed tanks | Status | EPA record |
|---|---|---|---|---|
| TRAVEL CENTERS OF AMERICA | ELOY | 10 / 0 | Open UST(s) | AZ0-007874 |
| PETRO TRUCK STOP | ELOY | 7 / 2 | Open UST(s) | AZ0-003694 |
| FLYING J TRAVEL PLAZA #609 | ELOY | 7 / 0 | Open UST(s) | AZ0-006210 |
| HEXCEL CORPORATION | CASA GRANDE | 6 / 18 | Open UST(s) | AZ0-002481 |
| PRIDE TRAVEL CENTER (ELOY) | ELOY | 6 / 0 | Open UST(s) | AZ0-003904 |
| CIRCLE K #2947 | ELOY | 5 / 0 | Open UST(s) | AZ0-005482 |
| UA BIOSPHERE 2 | ORACLE | 4 / 7 | Open UST(s) | AZ0-004712 |
| ADAMS DISTRIBUTING CO | CASA GRANDE | 4 / 6 | Open UST(s) | AZ0-005259 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| FLYING J TRAVEL PLAZA #609 | ELOY | 2019-10-07 | Diesel | AZ0-006210-1732.08 |
| CENTRAL ARIZONA COLLEGE - SIGNAL PEAK CAMPUS | COOLIDGE | 2019-03-20 | Gasoline (UL) | AZ0-000986-3566.04 |
| CIRCLE K #2700661 | FLORENCE | 2018-06-29 | Gasoline (UL) | AZ0-001280-3701.05 |
| CIRCLE K #2702927 | MARICOPA | 2014-12-19 | Gasoline (UL) | AZ0-001510-5629.01 |
| FLYING J TRAVEL PLAZA #609 | ELOY | 2014-10-24 | Gasoline (UL) | AZ0-006210-1732.07 |
| FLYING J TRAVEL PLAZA #609 | ELOY | 2014-10-24 | Gasoline (Super UL) | AZ0-006210-1732.06 |
What this means if you're buying or lending here
- "Closed" ≠ clean. A closed tank was taken out of service per the registry — many were closed without soil testing, especially before the late 1990s.
- The registry is incomplete by design. Tanks removed before 1986 and most residential heating-oil tanks were never registered. A county with 487 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 22 cases in this county are still open; contamination may still be under investigation or remediation — distance from a specific parcel is what matters, and that's a per-address question.
Screen a specific property
This page covers the county. A purchase or loan decision needs the registry around one address: registered tanks at the parcel, every facility within 500 and 1,500 ft, leak cleanups with status and distance — each line cited to the official record.
Screen an address — $49 How it worksThis is a screen of EPA-registered tank and leak records, not an environmental site assessment. State registries are incomplete by design: tanks removed before 1986 and most residential heating-oil tanks were never registered, so a clean screen cannot prove the absence of a tank. "Closed" means a tank was taken out of service per the registry — it does not certify that no contamination remains.
source: EPA UST Finder EPA data vintage 2024-12-04 computed 2026-06-12