(a) The governing body of a municipality that establishes a local health department may provide for the creation of an administrative or advisory public health board and the appointment of representatives to that board.
(b) The commissioners court of a county that establishes a local health department may provide for the creation of an advisory public health board and the appointment of representatives to that board.
(c) The director of the local health department is an ex officio, nonvoting member of any public health board established for the local health department.