Minn. Stat. § 456.37: WATER PIPES IN ROADS.

Subdivision 1. Where pipes may go.

A home rule charter city that owns and operates a waterworks may extend its waterworks and supply water to occupants of property adjacent or accessible to the extension. The waterworks may be extended over, under, or along any road, street, alley, or public highway in or out of the city. The extension must not interfere with the safety or convenience of ordinary travel on the road, street, alley, or public highway.

Subd. 2. Not in another city.

This section does not give a home rule charter city any rights in any other city.

Subd. 3. May charge reasonable fee.

A home rule charter city may charge a reasonable fee for supplying water under this section.