There is hereby created a Water and Sanitary Sewer Board of the City, which shall be composed of the Mayor and four persons appointed by Council, one of whom, during any construction period, must be a registered professional engineer, and the engineer member of the Board need not be a resident of the City. After any such construction has been completed, the engineer member may be succeeded by a person not an engineer. The appointed members of the Board shall serve their terms subject to the will and pleasure of Council. The appointees shall originally be appointed for terms of one, two, three and four years, respectively, and upon the expiration of each succeeding term, appointment of a successor shall be made in similar manner for a term of four years. Any member of the Board serving as such commissioner on February 8, 1982, who shall have been appointed to such office prior to the date of such approval, shall be entitled to reappointment at the expiration of his appointed term to an additional term of four years. Vacancies shall be filled for an unexpired term and such substitutions shall be made in the same manner as was the original appointment. (8-4-80; 11-3-80; 2-8-82)