Authorizes a water-sewer district to construct, condemn and purchase, add to, maintain, and operate systems of wastewater reclamation as authorized by chapter 90.46 RCW for the purpose of furnishing the district and the inhabitants thereof with reclaimed wastewater for all authorized uses and purposes, public and private, including with full authority to regulate the use and operation thereof and the service rates to be charged. In compliance with other sections of chapter 57.08 RCW, a district may also provide reclaimed wastewater services to persons outside the district.