Wash. Rev. Code § 74.38.070
Notwithstanding any other provision of law, any county, city, town, public utility district or other municipal corporation, or quasi municipal corporation providing utility services may provide such services at reduced rates for low-income senior citizens or other low-income citizens: PROVIDED, That, for the purposes of this section, "low-income senior citizen" or "other low-income citizen" shall be defined by appropriate ordinance or resolution adopted by the governing body of the county, city, town, public utility district or other municipal corporation, or quasi municipal corporation providing the utility services. Any reduction in rates granted in whatever manner to low-income senior citizens or other low-income citizens in one part of a service area shall be uniformly extended to low-income senior citizens or other low-income citizens in all other parts of the service area.
RCW 74.38.070
Findings-Intent-1998 c 300: See RCW 19.29A.005.
Construction-1998 c 300: See RCW 19.29A.900.