The Spokane County Coordinated Water System Plan (CWSP) was created for water utilities to coordinate their planning and construction programs with adjacent water utilities and other local jurisdiction programs such as comprehensive planning done under the Growth Management Act. The CWSP was developed according to RCW 70.116, Public Water System Coordination Act, enacted in 1977 and modified in 1991.
Provided below are the CWSP document and maps of the service area of each water utility. There are 2 versions of each map - one with parcel information and one without. These maps represent the service area boundaries as of March 16, 2010.