The director may adopt any rules that are deemed necessary to carry out the purposes of this article. The director may adopt, by rule, lists of plumbing fixtures that satisfy the standards prescribed by this article. The director may also adopt, by rule, a list of uses for which plumbing fixtures satisfying the requirements of this article are inappropriate and may exempt such uses from further compliance with those requirements. The director may also amend this list as necessary to reflect advances in technology that allow water conserving plumbing fixtures to be employed for such uses. In adopting any rule defining the type, design or use of any plumbing fixture regulated under this article, the director shall give due consideration to the availability and affordability of the fixture and the method of its installation.