Mich. Comp. Laws § 101.11: Construction petition; sewer districts.

Sec. 11.

When the owner of a majority of the lands liable to taxation in any sewer district or part of the city which may be constituted a sewer district, shall petition for the construction of a sewer therein, the council shall construct a district sewer in such location, and if the lands included in the line of such proposed sewer are not within any sewer district, a district shall be formed for that purpose. In other cases sewers shall be constructed in the discretion of the council.