After January 1, 1982, any toilets installed prior to the effective date hereof which are located on watersheds in Salt Lake County, or canyons contiguous to these watersheds, shall be replaced with toilets or water closets which meet the standards for new construction or remodeling specified in section 2-5-29 of the revised ordinances of Salt Lake County, 1965, or its successor, as amended. (Prior code § 5-14-7)