Wash. Admin. Code § 110-30-0130
CPS must notify the parent, guardian, or legal custodian of a child at the earliest possible point that will not jeopardize the investigation or the safety or protection of the child when:
(1) CPS is investigating a report alleging an act or acts of child abuse or neglect, and:
[WSR 18-14-078, recodified as § 110-30-0130, filed 6/29/18, effective 7/1/18. Statutory Authority: RCW 74.13.031, 74.04.050, and chapter 26.44 RCW. WSR 02-15-098 and 02-17-045, § 388-15-045, filed 7/16/02 and 8/14/02, effective 2/10/03.]