Requires a permit applicant or permittee to enter into a written agreement with an affected group A public water system before he or she may convey, distribute, store, supply, or use reclaimed water at one or more locations within, or in hydrologic connection to, an aquifer or groundwater source covered by a critical aquifer recharge area, a wellhead protection area, or a sole source aquifer area.

Authorizes an affected group A public water system to waive the agreement requirement for a period of time not to exceed the term of the reclaimed water permit.

Requires the department of health and the department of ecology to provide reasonable technical assistance on certain issues, if jointly requested by a group A water system and a reclaimed water permit applicant or permittee.