open exit extremity 31 that leads toward said sewage conveying pipe an electric motor 32 is provided having drive shaft 33 that constitutes the axle of said impeller and is imperviously journaled through the rear face 37 of housing 11 by way of bushing 34 shaft 33 is horizontally oriented and enters housing 11 at an elevation adjacent upper region 17 of intake conduit 10 motor 32 is electrically connected by conductor wire 41 to relay box 42 which receives electric current through conductor 43 said relay box is joined by conductor wire 39 to switch means 25 when switch means 25 is contacted by finger 24 relay box 42 routes electric current to motor 32 causing impeller 26 to be rotated in the direction indicated by the arcuate arrowed line in fig1 motor 32 is preferably of variable speed type having sufficiency power to cope with transient overloads and variable hydraulic heads an access panel 35 removably covers a servicing aperture 36 of corresponding size in the front face 38 of housing 11 the size of aperture 36 is sufficiently large to permit replacement of impeller 26 motor 32 and housing 11 are preferably mounted upon a base plate 40 all materials of construction are selected so as to be corrosion resistant accordingly plastics such as polyvinylchloride are preferred materials of construction by virtue of the aforesaid specialized components and the nature.