The following standard minimum size mains shall be used for hydrant supply for all construction:
   (a)   For residential districts, eight-inch, except that a six-inch main can be used where it completes a good gridiron, but in no case in blocks 400 feet or more in length; and
   (b)   For commercial and industrial zoning districts, eight-inch and twelve-inch, the smaller size main to be used only in sections where it completes a good gridiron and the larger size main to be used for long lines not cross-connected. Hydrant spacing in such districts shall not exceed 300 feet between hydrants.
(Ord. 68-13. Passed 2-20-68; Ord. 04-47.  Passed 5-4-04.)