2006 Water Comprehensive Plan - City of Bellevue

local water distribution systems are listed in Table 3-3. The City currently purchases all of itswater from the Cascade Water Alliance. Interties with regional transmission and supply systems(regional supply inlet meters) are listed in Table 6-2.Currently, the City of Bellevue wheels Cascade water through its system to the City ofRedmond, and to the City of Issaquah. In addition, the City has service area agreements withthe City of Issaquah, the City of Kirkland, the City of Redmond, the Coal Creek Utility District,and Water District #1 (see Appendix B). The Bellevue-Issaquah agreements provide adelineation of the current and future service area between the two cities. Bellevue’s provision ofwater outside its service area requires the approval of the Cascade Water Alliance and is subjectto Bellevue's contract with the Cascade Water Alliance.Coal Creek Utility District, the City of Kirkland, the City of Redmond, and the City of Issaquahare four purveyors adjacent to Bellevue. Summary information on these systems can be foundin each purveyor's most recent comprehensive water plan. Highlights of their relationship toBellevue's system are explained below.City of KirklandThe City of Kirkland is an adjacent water purveyor just north of Bellevue and west of 132ndAvenue NE. In 1969, Water District 99 (now a portion of Bellevue) made an agreement withWater District 81 (now a portion of Kirkland) and the City of Kirkland to jointly construct andoperate a major storage facility and transmission lines. The 11.2-MG 545 zone reservoir iscurrently owned jointly by Redmond, Bellevue, and Kirkland as a result of this agreement andthe subsequent assumption of Rose Hill Water District (formerly W.D. 81) by the three cities.Bellevue owns 1.5-MG of the total capacity. Maintenance costs for cleaning and painting areshared among the owners in proportion to ownership shares. A 16-inch line passing throughRedmond on 140th Avenue NE near NE 60th Avenue connects Bellevue to the jointly ownedreservoir, which is operated by Kirkland. Kirkland wheels Cascade water through the 16-inch,metered intertie to approximately 60 homes in Bellevue. Kirkland's slightly higher pressureprovides better service, and the flow prevents water quality problems in the 16-inch main.Additionally, there is an emergency supply intertie between Bellevue and Kirkland, located on148th Avenue NE at NE 51st Street. Water from Kirkland is available at this location viaRedmond’s water system under the Rose Hill Water District assumption agreement.As a result of a 2004 amendment to the 1994 Rose Hill Water District assumption by the citiesof Kirkland, Redmond and Bellevue, Kirkland also wheels Cascade water via Redmond to thesmall portion of the former district assumed by Bellevue. This area is bounded by 140thAvenue NE, NE 60th Street, 148th Avenue NE and approximately NE 55th Street and includesapproximately 65 Bellevue water service accounts.An emergency intertie between the Bellevue and Kirkland is located on Northup Way just eastof Bellevue Way. The intertie consists of an isolation valve between Bellevue’s 400 pressurezone and Kirkland’s 285 pressure zone.3-14