(a) The governing body of a municipality that enters a contract or agreement with a district located in more than one county to jointly construct, acquire, operate, or maintain a regional wastewater system is entitled to appoint a special director to the board of the district. § 51.072 does not apply to a special director.
(b) The office of special director exists only during the period for which the contract or agreement is in effect. If the contract or agreement is in effect for a term of more than four years, a special director serves for a four-year term of office. A vacancy in the office of special director shall be filled by the governing board of the municipality.

(c) A special director is entitled to vote only on matters before the district’s board of directors that are directly related to the regional wastewater system that is the subject of the contract or agreement between the municipality and the district.
(d) In any matter on which the director appointed under this section votes, approval by a majority of the six members of the board is required for approval.