18-29-608.17.1.2 Direct connections.
   No pipe or system of piping in any building, structure, or premises, which receives its supply from the Chicago Waterworks System shall be directly connected to any device, appliance, or apparatus in which such water supply is used to provide power through a water jet or other device to create vacuum or partial vacuum with which to operate any aspirator, syphon, cellar drainer, ejector, cleaner, sweeper, conveyor, or washer of any kind or description.