RCW 54.40.010Five commissioner districts—Requirements.A five commissioner public utility district is a district that (1) either: (a) Has or had a license from the federal power commission to construct a hydroelectric project of an estimated cost of more than two hundred and fifty million dollars, including interest during construction; or (b) has a population of five hundred thousand or more; and (2) voters of the district approved a ballot proposition authorizing the district to become a five commissioner district as provided under RCW 54.40.040. All other public utility districts shall be known as three commissioner districts.[ 1994 c 223 s 57; 1977 ex.s. c 36 s 1; 1959 c 265 s 2.]
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