Michigan Compiled Laws, Chapter 117. Home Rule Cities § 117.4b

(1) Refund of money advanced; bonds. For refunding money advanced or paid on special assessments imposed, for water main extensions; for borrowing money through its legislative body on the faith and credit of the city, to provide for such refunding from time to time as buildings shall be connected with such water main extensions; and for the issuance of bonds therefor due in not more than 30 years in an amount and at the rate of interest limited by the charter of such city;

(2) Sewers; water-works. For the installation and connection of sewers and waterworks on and to property within the city; for assessing the cost thereof to the several properties and making the same a lien thereon; and for the borrowing of money and issuing bonds in anticipation of the collection of such special assessments;

(3) Lighting. For the installation and connection of conduits for the service of municipally owned and operated electric lighting plants; and for the borrowing of money and issuing the bonds of the city therefor, for the purpose of providing the first cost of such installation and connection.