Provides that certain eastern Washington cities and counties may require a mobile home park to connect to a sewer system under certain circumstances.

Provides that the county or city legislative authority requiring a mobile home park to connect to a sewer system should identify and extend, as applicable, those financial assistance programs it can access and provide to that mobile home park including local, state, or federal affordable housing programs, water quality protection grant and loan programs, and public health, safety, and welfare programs.