(a) Where a subdivision is located within 300 feet of an existing water main, each lot shall be provided with a connection to the water system, the water mains to be installed by the company owning the water system. Fire hydrants shall also be installed in all subdivisions within the corporate limits,
(b) In subdivisions more than 300 feet from an existing main, pending availability of a public water supply, wells, or a private water supply system shall be constructed to insure that an adequate supply of potable water shall be available to each lot.
(1980 Code 152.39)