Grayson County, TX
The federal environmental record for Grayson County (population 146,907): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
5
federal cleanup sites
5
PFAS-detecting water systems
14
TRI facilities
4
open tank releases
Drinking water: PFAS testing
Public water systems serving Grayson 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 SHERMAN TX0910006 | PFBA: 8.3 ng/L PFHxA: 3.8 ng/L PFPeA: 3.8 ng/L | detected |
| CITY OF VAN ALSTYNE TX0910009 | PFBA: 10.3 ng/L | detected |
| TWO WAY SUD TX0910022 | 6:2 FTS: 97.1 ng/L | detected |
| TANGLEWOOD ON TEXOMA TX0910052 | PFHxS: 28 ng/L PFBS: 10.2 ng/L PFHxA: 6 ng/L | detected |
| SOUTH GRAYSON SUD TX0910064 | 6:2 FTS: 8.4 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
14 facilities in Grayson filed TRI reports for 2024, totalling 85k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| DENISON INDUSTRIES | DENISON | Aluminum (fume or dust), Diisocyanates | 29k lb |
| TYSON FRESH MEATS INC | SHERMAN | Ammonia | 24k lb |
| FLORESTONE LLC | DENISON | Styrene | 17k lb |
| TEXAS INSTRUMENTS | SHERMAN | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), N-Methyl-2-pyrrolidone | 9k lb |
| FINISAR CORP | SHERMAN | N-Methyl-2-pyrrolidone | 7k lb |
| AAAR DENISON I | DENISON | Copper, Lead | 13 lb |
| EATON CORP. | SHERMAN | Chromium, Nickel | 8 lb |
| TEXAS MANUFACTURING CO | WHITESBORO | Chromium, Nickel | 4 lb |
| KAISER ALUMINUM FABRICATED PRODUCTS LLC | SHERMAN | Lead | 1 lb |
| REDI-MIX - SHERMAN | SHERMAN | Lead | 0 lb |
| HOLCIM-SOR,INC. - SHERMAN RMX | SHERMAN | - | 0 lb |
| AMERITEX PIPE & PRODUCTS GUNTER | GUNTER | Lead | 0 lb |
| POTTSBORO READY MIX | DENISON | Lead compounds | 0 lb |
| STARTKLEEN SOLUTIONS LLC | GUNTER | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 432 tank facilities in Grayson: 308 tanks in service and 843 closed. 161 fuel releases are on record, of which 4 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Grayson 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 Grayson, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- ACTION RESOURCES TANKER TRUCK HCL SPILLWHITESBORO
- GUNTER TRAIN COLLISIONGUNTER
- SHERMAN PROPANESHERMAN
- TOXIC AROMATHERAPYBELLS
- UP DERAILMENT DENISONDENISON