The purposes of this chapter are:

(1) To provide for the establishment of critical water supply service areas related to water utility planning and development;

(2) To provide for the development of minimum planning and design standards for critical water supply service areas to insure that water systems developed in these areas are consistent with regional needs;

(3) To assist in the orderly and efficient administration of state financial assistance programs for public water systems; and

(4) To assist public water systems to meet reasonable standards of quality, quantity and pressure.