Wisconsin constitution
Article XI: corporations
As amended nov. 1874, nov. 1912, nov. 1924, nov. 1932, april 1951, april 1955, nov. 1960, april 1961, april 1963, april 1966 and april 1981.

(5) An indebtedness created for the purpose of purchasing, acquiring, leasing, constructing, extending, adding to, improving, conducting, controlling, operating or managing a public utility of a town, village, city or special district, and secured solely by the property or income of such public utility, and whereby no municipal liability is created, shall not be considered an indebtedness of such town, village, city or special district, and shall not be included in arriving at the debt limitation under sub. (2).