7-13-144. Resolution to establish service charges -- hearing -- limitations and tax levy. The board of county commissioners may, subject to the provisions of Title 69, chapter 7, by resolution and after public hearing:

(1) fix and establish the sewer rates, charges, and rentals at amounts sufficient in each year to provide income and revenue adequate for the payment of the reasonable expense of operation and maintenance of the system;

(2) fix and establish an additional charge for the operation and maintenance of a sanitary and storm sewer system and of a sewage treatment plant; and

(3) subject to 15-10-420, levy and assess a tax upon the taxable valuation of each and every lot or parcel of land and improvements on the parcel or lot in the district in order to provide sufficient revenue for the reserve fund in an amount necessary to meet the financial requirements of the fund as described in 7-13-151 through 7-13-156.