It is the policy of this state and the purpose of this chapter to:
(1) maintain the quality of fresh water in the state to the extent consistent with the public health and welfare and the operation of existing industries;
(2) promote the beneficial reuse of commercial, industrial, and municipal waste for the economic development of the state, thereby reducing the demand on the state's supply of fresh water;
(3) prevent underground injection that may pollute fresh water; and
(4) require the use of all reasonable methods to implement this policy.