(1) Purpose. The purpose of this chapter is to encourage the use of reclaimed water to help meet the growing need for clean water across the state by establishing a regulatory framework for the generation, distribution, and use of reclaimed water for the beneficial uses established in chapter 90.46 RCW and this chapter.

Nothing in this chapter shall supersede or diminish the provisions of chapters 173-200, 173-201A, 173-500, 246-290, 246-292, 246-272, 246-272A, 246-272B, and 246-274 WAC.

(2) Scope. This chapter implements chapter 90.46 RCW and establishes requirements for production, distribution, and use of reclaimed water as authorized by ecology and health. This chapter also establishes lead and nonlead agency designations, roles, and responsibilities over particular aspects of reclaimed water, as well as requirements for:

(a) Planning, designing, constructing, operating, and maintaining reclaimed water facilities.

(b) Permitting of reclaimed water facilities.

(c) Technology-based treatment, operational storage and distribution, treatment reliability, and use-based requirements.

(d) Compliance with RCW 90.46.130, preventing impairment of existing water rights.