Texas Local Government Code - LOC GOV'T § 351.034. Administrator

(a) The sheriff of the county in which the jail is located shall serve as administrator of the jail.

(b) The sheriff may decline to serve as administrator by filing a written statement with the commissioners court of that county.

(c) If the sheriff declines to serve as administrator, the commissioners courts of the contracting counties shall jointly appoint a jail administrator. Until an individual is appointed and assumes the duties of jail administrator, the sheriff shall serve as administrator of the jail.

(d) If there is a vacancy in the position of jail administrator, the sheriff shall serve as administrator of the jail until a new jail administrator is appointed and assumes the position.