Sec. 6. The board may fix and set aside:
(1) the proportion of the revenues of the waterworks department necessary for reasonable and proper operation and maintenance;
(2) the proportion of the revenues for a proper and adequate depreciation account; and
(3) the fixed proportion of the revenues to be applied to the payment of the principal and interest of the authorized bonds.
As added by Acts 1982, P.L.74, SEC.1.