204.370.  Bonds, issuance on four-sevenths vote — certain counties (Jackson and Cass). — 1.  No common sewer district in any county of the first classification which has a charter form of government and which contains all or any portion of a city with a population of three hundred fifty thousand or more inhabitants, or in any county of the first classification without a charter form of government and which has a population of more than sixty-three thousand seven hundred but less than seventy-five thousand shall issue or deliver any bonds for the purpose of acquiring, constructing, improving or extending any sewerage system payable from the revenues to be derived from the operation of the system unless a proposition to issue the bonds shall have received the assent of a majority of the voters of the sewer district who shall vote on the question or the written assent of three-quarters of the customers of the sewer district.  For purposes of this section, "customer" shall mean:

  (1)  A political subdivision within the district which has a service or user agreement with the district; or

  (2)  A duly created subdistrict.

  2.  The question shall be submitted in substantially the following form:

Shall revenue bonds in the amount of ______ dollars for the purpose of ______ (acquiring, constructing, improving or extending the sewerage system) be issued by the ______ common sewer district?