No water main shall be installed with less than the minimum pipe size dictated by good engineering practice, and in no case shall any water main be of a size having less than a six-inch diameter. The town shall have the right to increase the required diameter of the main extension, if it deems it advisable, subject however to the condition that the laid cost of the main extension of the larger diameter pipe to the developer will not exceed the laid cost of the same extension if it were six-inch diameter pipe. All water feeder lines (laterals) shall be four-inch lines or of such other sizes or types as shall be approved by the town council or its delegated representative and by the town building inspector.
(Prior code § 16-7-1)