Hays County, TX
The federal environmental record for Hays County (population 280,486): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
1
federal cleanup sites
5
PFAS-detecting water systems
11
TRI facilities
5
open tank releases
Drinking water: PFAS testing
Public water systems serving Hays 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 |
|---|---|---|
| CITY OF SAN MARCOS TX1050001 | PFBA: 11.4 ng/L PFPeA: 4.2 ng/L PFHxS: 3.4 ng/L | detected |
| CITY OF KYLE TX1050002 | PFBA: 19.4 ng/L PFPeA: 4.5 ng/L PFHxA: 3.1 ng/L | detected |
| CITY OF BUDA TX1050012 | PFBA: 17 ng/L PFPeA: 4.2 ng/L | detected |
| GOFORTH SUD TX1050019 | 6:2 FTS: 15.6 ng/L PFBS: 7.2 ng/L PFBA: 6.2 ng/L | detected |
| COUNTY LINE SUD TX1050038 | PFPeA: 4.5 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
11 facilities in Hays filed TRI reports for 2024, totalling 51k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| ENF (KYLE) TECHNOLOGY LLC | KYLE | Ammonia | 33k lb |
| EPIC PIPING | SAN MARCOS | Xylene (mixed isomers) | 12k lb |
| TEXAS LEHIGH CEMENT CO LP | BUDA | Ammonia, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | 5k lb |
| COLLINS AEROSPACE SAN MARCOS | SAN MARCOS | Nitric acid | 1k lb |
| LONE STAR PRECAST | BUDA | Lead compounds, Mercury compounds | 2 lb |
| CMC STEEL FABRICATORS INC (DBA CMC CAPITOL CITY STEEL) | BUDA | - | 0 lb |
| CENTEX MATERIALS - BUDA RMX | BUDA | Lead | 0 lb |
| ASPHALT INC. BUDA | BUDA | Polycyclic aromatic compounds | 0 lb |
| CMC STEEL FABRICATORS INC. | SAN MARCOS | - | 0 lb |
| PAVESTONE - SAN MARCOS TX PLANT | SAN MARCOS | Lead | 0 lb |
| ASPHALT INC BUDA CENTEX PLANT | BUDA | Polycyclic aromatic compounds | 0 lb |
Underground fuel tanks
EPA's UST Finder records 219 tank facilities in Hays: 214 tanks in service and 388 closed. 123 fuel releases are on record, of which 5 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Hays as Zone 3, the lowest predicted indoor radon (under 2 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 Hays, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- AMASIA COVE MERCURY RELEASEAUSTIN