53 Pa. Stat. § 53453
It shall be the duty of the judges of the court of common pleas, upon application of any incorporated town or borough council, as aforesaid, to appoint such commissioners of water-works, one of whom shall be appointed to serve for one year, one for two years, and one for three years; and annually thereafter the judges of said court shall appoint one citizen to serve as a commissioner of water-works, for a term of three years. In case of a vacancy the said court shall fill the same for the unexpired term thereof. Such commissioners of water-works shall not receive salary for their services, but shall be paid all such sums necessarily expended in the performance of their duty: Provided, however, That after three years from the first appointment under this act, the borough or town council may at any time rescind the resolution asking for the appointment of a commissioner of water-works. When such resolution shall be so rescinded the court shall make no further appointment of commissioner of water-works until a resolution shall again be passed by council asking for such appointment.
53 P.S. § 53453