Requires the department of ecology to work collaboratively to examine potential alternatives for increasing the amount of water otherwise allocated to rural homeowners and businesses under the water resources act.

Authorizes the department of health, the department of fish and wildlife, and the state building code council to be requested to assist the department of ecology in developing viable alternatives that clearly address the needs of homeowners and the home building industry to make these options practical, economical, and safe.

Authorizes county legislative authorities to create a limited purpose local water bank in watersheds where the department of ecology has closed or partially closed a basin to further appropriation of groundwater, or in areas where closure or partial closure is anticipated.