RCW 59.18.300
Termination of tenant's utility services -- Tenant causing loss of landlord provided utility services.

It shall be unlawful for a landlord to intentionally cause termination of any of his tenant's utility services, including water, heat, electricity, or gas, except for an interruption of utility services for a reasonable time in order to make necessary repairs. Any landlord who violates this section may be liable to such tenant for his actual damages sustained by him, and up to one hundred dollars for each day or part thereof the tenant is thereby deprived of any utility service, and the prevailing party may recover his costs of suit or arbitration and a reasonable attorney's fee. It shall be unlawful for a tenant to intentionally cause the loss of utility services provided by the landlord, including water, heat, electricity or gas, excepting as resulting from the normal occupancy of the premises.

[1973 1st ex.s. c 207 § 30.]