(1) For the purpose of paying the costs of operation and maintenance of district works constructed under this chapter, the district board may by ordinance:
(a) Impose and collect service charges on the owners or occupants of property served by the works of the district.
(b) Impose and collect user charges, fees and tolls for use of works, facilities and services of the district.
(2) Service or user charges shall be based on the cost of operation, maintenance and administration of the works, facilities or service.