Wash. Rev. Code § 7.48.160 : — SPECIAL PROCEEDINGS AND ACTIONSNUISANCES — Authorized act not a nuisance TEXT PDF Nothing which is done or maintained under the express authority of a statute, can be deemed a nuisance. RCW 7.48.160 Code 1881 § 1238; 1875 p 79 § 4; RRS § 9916.