Wash. Rev. Code § 57.08.044
A district may enter into contracts with any county, city, town, or any other municipal or quasi-municipal corporation, or with any private person or corporation, for the acquisition, ownership, use, and operation of any property, facilities, or services, within or without the district, and necessary or desirable to carry out the purposes of the district. A district may provide water, reclaimed water, sewer, drainage, or street lighting services to property owners in areas within or without the limits of the district, except that if the area to be served is located within another existing district duly authorized to exercise district powers in that area, then water, reclaimed water, sewer, drainage, or street lighting service may not be so provided by contract or otherwise without the consent by resolution of the board of commissioners of that other district.
RCW 57.08.044
Part headings not law-1999 c 153: See note following RCW 57.04.050.
Part headings not law-Effective date-1996 c 230: See notes following RCW 57.02.001.
Legislative declaration-"District" defined-Severability-1981 c 45: See notes following RCW 36.93.090.
Severability-1959 c 103: "If any provision of this act, or its application to any person or circumstance is held invalid, the remainder of the act, or the application of the provision to other persons or circumstances is not affected." [ 1959 c 103 s 19.]
Water-sewer districts and municipalities, joint agreements: RCW 35.67.300.