UST Check → counties → Arizona → Pima
Underground storage tanks & leak sites in Pima 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.
1,514registered tank facilities
794open tanks
3,575closed tanks
1,346leak incidents on record
44cleanups still open
44 leak cleanups in
Pima 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 |
|---|---|---|---|---|
| TUCSON INTERNATIONAL AIRPORT | TUCSON | 7 / 29 | Open UST(s) | AZ0-000114 |
| FLYERS ENERGY 3057 | TUCSON | 6 / 4 | Open UST(s) | AZ0-004986 |
| D & F SHELL | TUCSON | 5 / 5 | Open UST(s) | AZ0-004969 |
| TUCSON TRUCK TERMINAL | TUCSON | 4 / 23 | Open UST(s) | AZ0-005199 |
| SPEEDWAY STORE #2944 | TUCSON | 4 / 7 | Open UST(s) | AZ0-002806 |
| TUCSON MEDICAL CENTER | TUCSON | 4 / 6 | Open UST(s) | AZ0-005191 |
| TEXACO #60-351-1000 | TUCSON | 4 / 4 | Open UST(s) | AZ0-004966 |
| CHEVRON | TUCSON | 4 / 1 | Open UST(s) | AZ0-002001 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| A & M UNION 76 | TUCSON | 2019-07-30 | Diesel,Gasoline (UL) | AZ0-006326-5796.01 |
| CIRCLE K #2939 | TUCSON | 2019-05-31 | Gasoline (PUL) | AZ0-005474-2900.04 |
| CIRCLE K #2701635 | TUCSON | 2019-04-19 | Gasoline (PUL) | AZ0-001459-5785.01 |
| CIRCLE K #2702942 | TUCSON | 2018-09-26 | Gasoline (PUL),Gasoline (UL) | AZ0-005477-5752.01 |
| CLYDE WANSLEE AUTO SALES | TUCSON | 2018-08-23 | Gasoline (Leaded) | AZ0-008337-5750.01 |
| CIRCLE K #2912 | TUCSON | 2018-03-27 | Gasoline (PUL) | AZ0-005452-4263.04 |
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 1,514 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 44 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