Abstract: A combination sub basement flooring water and radon gas evacuation system consisting of a plurality of semi-cylindrically shaped porous channeling components affixed to one another and in turn to a modified sump pump unit characterized by the presence of holes tapped into front, back and lateral sides thereof and a larger hole in the topside thereof for receipt of upwardly jutting piping connected to a vacuum pump to which other piping is connected leading upwardly and out of the home or building containing the system.