Section 250.040 - Cost of system, how financed by citiesThe cost to any such city, town or village of acquiring, constructing, improving or extending a sewerage system or a combined waterworks and sewerage system may be met:
(1) Through the expenditure by any such city, town or village of any funds available for that purpose;(2) Through the issuance of bonds for that purpose of the city, town or village payable from taxes to be levied by such city, town or village;(3) From the proceeds of special assessments levied and collected in accordance with law;(4) From any other funds which may be obtained under any law of the state or of the United States for that purpose; or(5) From the proceeds of revenue bonds of such city, town or village, payable solely from the revenues to be derived from the operation of such sewerage system or combined waterworks and sewerage system or from any combination of any or all such methods of providing funds.