In order to provide the least costly, most efficient, and reliable water supply to a growing state, it is the intent of the Legislature that the department accomplish the following objectives:
(a) Integrate state flood protection and water supply systems.
(b) Promote conjunctive use of groundwater storage capacity to improve overall water supply and flood system operation.
(c) Promote increased water use efficiency through expanded use of water conservation, water recycling, and improvements in technology.