Washington Administrative Code
Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508)
Chapter 173-221 - Discharge standards and effluent limitations for domestic wastewater facilities
Section 173-221-010 - Purpose and scope
Current through Register Vol. 24-06, March 15, 2024
(1) The purpose of this chapter is to implement RCW 43.21A.010, 90.48.010, and 90.52.040 by setting discharge standards which represent "all known, available, and reasonable methods" of prevention, control, and treatment for domestic wastewater facilities which discharge to waters of the state. This chapter supplements WAC 173-220-130. Guidelines or policies of the department not included in this chapter are not affected by this chapter, except that if such guidelines or policies are in conflict, the requirements of this chapter shall take precedence.
(2) This chapter also supplements 40 C.F.R. Part 133; Secondary Treatment Regulation. Wherever this chapter is more stringent than the federal regulation, the requirements of this chapter shall take precedence.
Statutory Authority: RCW 90.48.035 and 90.48.260. 87-23-020 (Order 87-26), § 173-221-010, filed 11/12/87.