(1) approve the design of installations and quality of materials used in installations under this chapter, in accordance with approved sanitary engineering standards;
(2) determine, from time to time, the types of wastes that may be discharged into the public sewer system, giving consideration to the type of sewer lines and pipes available, and established methods of testing or sampling the quality and quantity of wastes flowing into the public sewer system; and
(3) issue, from time to time, rules and regulations not inconsistent with the provisions of this chapter necessary to carry out its provisions, which rules and regulations shall, upon approval of the Governor, have the force and effect of law.