When the council shall deem it for the public interest, such waterworks may be purchased, or may be constructed and maintained beyond the corporate limits of the city; and in such case the council shall have authority to enforce beyond the corporate limits of the city, within the county or counties in which such city is situated, and over the buildings, machinery and other property belonging to and connected with such waterworks, in the same manner and to the same extent as if they, or it, were within the city, all such ordinances and police regulations as may be necessary for the care, protection, preservation, management and control thereof.