The members of the sewerage commission, before entering upon their duties, shall take the same oaths required of members of the body electing them. They shall organize by electing one of the members as chairman thereof and a secretary, who may be the same person as the clerk of the city or town council.

Any vacancy occurring in the membership of the commission shall be filled by election as provided in § 5-31-820 and any member thereof may be removed for cause by any such city or town council.