After the effective date hereof, no building permits shall be issued for new construction or remodeling of hotels, motels, apartment houses, dwellings or other structures which have toilets or water closets which use more than four (4) gallons of water per flush. Any toilets or water closets installed prior to said effective date shall meet the standards of this section when replaced. All fixtures installed pursuant to the provisions of this chapter shall be of a design such that the walls of the toilet or water closet bowl are thoroughly washed and contents discharged with each flush. (Prior code § 5-14-6)