Tex. Health & Safety Code § 289.002
A district is created in each county located on the Texas-Mexico border that has a population of less than 300,000 and contains one or more municipalities with a population of 200,000 or more.
Added by Acts 2005, 79th Leg., Ch. 1367 (H.B. 2463), Sec. 1, eff. June 18, 2005.
Acts 2011, 82nd Leg., R.S., Ch. 1163 (H.B. 2702), Sec. 40, eff. September 1, 2011.