Sec. 4.21. SOLID WASTE MANAGEMENT CONTRACTS. (a) Unless otherwise provided by this Act, the district may contract to provide solid waste management services inside the district.

(b) The district shall set fees in a contract under Subsection (a) of this section after considering:

(1) the quality of the waste;

(2) the quantity of the waste;

(3) the difficulty encountered in treating or disposing of the waste;

(4) operation and maintenance expenses and debt retirement services; and

(5) any other reasonable considerations.