UST Check → counties → Texas → Hays
Underground storage tanks & leak sites in Hays County, TX
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.
219registered tank facilities
214open tanks
388closed tanks
123leak incidents on record
5cleanups still open
5 leak cleanups in
Hays 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 |
|---|---|---|---|---|
| TEX BEST TRAVEL CENTER 503 | KYLE | 6 / 0 | Open UST(s) | TX75744 |
| PILOT TRAVEL CENTER 1054 | MUSTANG RIDGE | 4 / 2 | Open UST(s) | TX117115 |
| TXDOT TRAVIS SOUTH MAINTENANCE FACILITY | AUSTIN | 4 / 1 | Open UST(s) | TX73763 |
| SAMS CLUB 4958 | SAN MARCOS | 4 / 0 | Open UST(s) | TX121072 |
| 7-ELEVEN STORE 40569 | SAN MARCOS | 4 / 0 | Open UST(s) | TX56093 |
| HAYS ENERGY FACILITY | SAN MARCOS | 4 / 0 | Open UST(s) | TX129920 |
| FAST BREAK 8 | SAN MARCOS | 4 / 0 | Open UST(s) | TX56092 |
| 7-ELEVEN 35803 | SAN MARCOS | 4 / 0 | Open UST(s) | TX52616 |
Open leak cleanups — most recently reported
| Site | City | Reported | Substance | EPA record |
|---|---|---|---|---|
| 7-ELEVEN STORE 40569 | SAN MARCOS | 2018-02-16 | — | TX120455 |
| AQUA BREW | SAN MARCOS | 2016-10-27 | — | TX120106 |
| TEX-BEST TRAVEL CENTER 3 | KYLE | 2015-08-17 | — | TX119776 |
| SAC N PAC 402 | BUDA | 2014-04-09 | — | TX119393 |
| DETAIL MASTER | SAN MARCOS | 2002-04-23 | — | TX115521 |
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 219 registered facilities has an unknown number of unregistered ones.
- Open cleanups are the headline. 5 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