(1) Upon complaint from a water right holder that the water level in the associated well or wells is being drawn down at a rate in excess of thirty feet in three years as set forth in WAC 173-130A-060 as a primary result of pumping by subsequent appropriators, the department shall evaluate the complaint and take appropriate regulatory action, to the extent practicable, to protect the rights of the prior appropriator.

(2) Whenever the department has reason to believe that the provision of WAC 173-130A-070 is going to be violated, regulatory action to limit withdrawals in the affected area will be initiated according to the procedure outlined in WAC 173-130A-090. Such regulation shall conform to the priority of the pertinent, valid rights and shall prevail on an annual basis until the condition no longer exists, unless the aggregate withdrawal is decreased by mutual agreement of the affected water right holders pursuant to RCW 90.44.180.

(3) The department shall take regulatory action, to the extent necessary, to assure compliance with water right conditions.