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You are here: Home / Air Quality / Mobile Source / Texas Low Emission Diesel (TxLED) Program / TxLED Affected Counties

TxLED Affected Counties

List of 110 Texas counties in which the Texas Low Emission Diesel (TxLED) regulations apply. Map, rules, contacts.

The Texas Low Emission Diesel (TxLED) regulations apply to all diesel fuel sold or supplied for use in motor vehicles and non-road equipment operating in 110 central and eastern Texas counties.

Map of Affected Texas Counties

TxLED is required in the following Texas counties:

  • Brazoria, Chambers, Fort Bend, Galveston, Harris, Liberty, Montgomery, and Waller counties (Houston-Galveston-Brazoria ozone nonattainment area).
  • Hardin, Jefferson, and Orange counties (Beaumont–Port Arthur ozone nonattainment area).
  • Collin, Dallas, Denton, Ellis, Johnson, Kaufman, Parker, Rockwall, and Tarrant Counties (Dallas–Fort Worth ozone nonattainment area).
  • Anderson, Angelina, Aransas, Atascosa, Austin, Bastrop, Bee, Bell, Bexar, Bosque, Bowie, Brazos, Burleson, Caldwell, Calhoun, Camp, Cass, Cherokee, Colorado, Comal, Cooke, Coryell, De Witt, Delta, Falls, Fannin, Fayette, Franklin, Freestone, Goliad, Gonzales, Grayson, Gregg, Grimes, Guadalupe, Harrison, Hays, Henderson, Hill, Hood, Hopkins, Houston, Hunt, Jackson, Jasper, Karnes, Lamar, Lavaca, Lee, Leon, Limestone, Live Oak, Madison, Marion, Matagorda, McLennan, Milam, Morris, Nacogdoches, Navarro, Newton, Nueces, Panola, Polk, Rains, Red River, Refugio, Robertson, Rusk, Sabine, San Jacinto, San Patricio, San Augustine, Shelby, Smith, Somervell, Titus, Travis, Trinity, Tyler, Upshur, Van Zandt, Victoria, Walker, Washington, Wharton, Williamson, Wilson, Wise, and Wood counties.

Related Rules

Title 30 Texas Administrative Code 114.319 — Affected Counties and Compliance Dates Exit the TCEQ

More Questions? Contact the TxLED Program!

For more information, please contact Morris Brown, Air Quality Planning Section, at 512-239-1438 or e-mail aqp@tceq.texas.gov and specify “TxLED Program” in the subject line.

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