4.__Sewers and drains.__Within the participating municipalities of the municipal service district, the municipal service district has all the powers conferred and shall perform all the duties imposed by law on municipalities with respect to:

A.__Laying out, constructing, reconstructing, repairing, maintaining, operating, altering, extending and discontinuing sewer and drainage systems and wastewater treatment plants; and

B.__Prohibiting and regulating the discharge of drains from roofs of buildings over or upon the sidewalks, streets or other public places or into sanitary sewers.

The municipal service district officers may, by agreement, delegate the authority over sewers and drains to a participating municipality.

5.__Planning and regulation of development.__Within the participating municipalities of the municipal service district, the municipal service district has all the powers conferred and shall perform all the duties imposed by law on municipalities with respect to preparing comprehensive plans and preparing and enforcing zoning, subdivision and other ordinances and capital improvement plans to implement the comprehensive plan, as prescribed by and consistent with chapter 187.

6.__Buildings.__Within the participating municipalities of the municipal service district, the municipal service district has all the powers conferred and shall perform all the duties imposed by law on municipalities with respect to:

A.__Making rules relating to the maintenance of safe and sanitary housing and adopting building and fire protection codes, consistent with state law;

B.__Regulating the mode of using any buildings when such regulations seem expedient for the purpose of promoting the safety, health, morals and general welfare of the inhabitants of the municipality;