(a) The board shall adopt rules that are necessary to carry out the program provided by Subchapter K, Chapter 17, of this code and rules:
(1) incorporating existing minimum state standards and rules for water supply and sewer services established by the commission; and
(2) requiring compliance with existing rules of any state agency relating to septic tanks and other waste disposal systems.
(b) In developing rules under this section, the board shall examine other existing laws relating to counties and municipalities.