Washington Revised Code Title 70A. Environmental Health and Safety § 70A.100.010. Legislative declaration

The legislature hereby finds that an adequate supply of potable water for domestic, commercial, and industrial use is vital to the health and well-being of the people of the state. Readily available water for use in public water systems is limited and should be developed and used efficiently with a minimum of loss or waste.

In order to maximize efficient and effective development of the state's public water supply systems, the department of health shall assist water purveyors by providing a procedure to coordinate the planning of the public water supply systems.