1. Authorize the construction of mains, submains and laterals for sewers, also ditches, drains, conduits, pipelines and channels for sanitary and drainage purposes, or either or both thereof, with lift stations, outlets, manholes, catch basins, flush tanks, connecting sewers, ditches, drains, conduits, channels and other appurtenances in, under, over or through any street, or any land of the municipality or any right-of-way granted or obtained for such purpose, either within or without the limits of the municipality;

2. Authorize the construction of mains, submains and laterals for water distribution lines, water distribution systems or waterworks, and water supply facilities for same; also ditches, canals, channels, conduits, pipelines and siphons, together with the necessary or usual appurtenances for carrying storm water or water from irrigation ditches, water courses, streams, springs, wells, lakes, treating plants or other sources of supply into, through or out of the municipality in, under, over or through any street or any land of the municipality or any right-of-way granted or obtained for such purpose, either within or without the limits of the municipality;

3. Join with other municipalities or any improvement district or sanitary district of the state, or any of its departments or agencies, the federal government or any of its departments, agencies or instrumentalities, as may be provided by law, in the construction, operation or maintenance of improvements authorized by the provisions of Sections 37-201 through 37-234 of this title; and

4. Accept from the state, or federal government, or any agency, department or instrumentality of either, grants for or in aid of the construction or engineering planning of any of the improvements provided herein, and enter into contracts with the state, the federal government, or any agency, department or instrumentality of either or both, for the construction or supervision of construction by the state, the federal government, or any agency, department or instrumentality, for either or both of any such improvements, in accordance with the plans, specifications, rules and regulations of the state, the federal government, or any agency, department or instrumentality or either or both, but reserving to the municipality the right to assess against the property benefited by the improvement and located within the municipality, that portion of the cost of the improvement which does not qualify for aid under the state or federal grant.