Texas Special District Local Laws Code - SDLL § 21.101. Governing Body; Composition

(a) The district is governed by a board of directors composed of at least six directors.

(b) If the district is composed of only one county, the commissioners court of that county shall appoint six persons to serve as directors.

(c) If the district is composed of two counties, the commissioners court of each county included in the district shall each appoint three persons to serve as directors.

(d) If the district is composed of three or more counties, the commissioners court of each county included in the district shall each appoint two persons to serve as directors.

(e) At least one of the directors appointed by each commissioners court shall represent the interests of municipalities and of unincorporated communities with a population of 1,000 or more that are located in that county.