of flexible material 69 are provided in the edges of lid 14 and bowl 12 to assure proper engagement of lid to bowl and seat and to further assure that water cannot leak between lid and bowl rim during flushing as described below the fluid flow system for toilet flushing and the lid lowering hydraulic system are schematically illustrated in fig4 fresh water enters through line 34 and solenoid valve 35 to water pump 32 motor 28 drives pump 32 to pump water at the desired pressure through line 36 to container 38 a second line 70 directs pressurized water to slide valve mechanism 39 a conventional slide valve not shown within housing 26 is movable transverse to the pump axis between a closed position separating the interior of bowl 12 from macerator 190 and the open position the slide valve is connected by a rod 72 to a piston 74 within cylinder 76 rod 72 is spring biased in a downwardly closed direction pressurized water entering the lower end of cylinder 76 forces piston 74 upwardly overcoming the spring closing force as piston 74 moves upwardly in cylinder 76 it forces a metered quantity of cleaning and deodorizing chemical concentrate up through tube 77 into tube 78 tube 78 is filled with.