4 Tex. Admin. Code § 7.52
The following counties shall be subject to the provisions of the Act, Subchapter G, unless specifically excepted by provisions of §7.53 of this title (relating to County Special Provisions): Aransas, Archer, Austin, Bailey, Bell, Bexar, Brazoria, Brazos, Briscoe, Burleson, Calhoun, Cochran, Collin, Collingsworth, Culberson, Dallas, Dawson, Deaf Smith, Delta, Dickens, Dimmit, Donley, El Paso, Falls, Foard, Fort Bend, Gaines, Galveston, Hall, Hardin, Harris, Haskell, Hidalgo, Houston, Hudspeth, Hunt, Jackson, Jefferson, Kaufman, King, Knox, Lamar, Lamb, Liberty, Loving, McLennan, Martin, Matagorda, Midland, Milam, Motley, Newton, Orange, Parmer, Rains, Refugio, Robertson, Rockwall, Runnels, San Patricio, Travis, Tyler, Waller, Ward, Wharton and Wilbarger.
Source Note:The provisions of this §7.52 adopted to be effective December 4, 1997, 22 TexReg 11652.