The chances of achieving effective radon treatment with sump pump suction are greatest when the tiles form nearly complete loop around the house perimeter. This radon mitigation system also called drain tile Depressurization or DTD. However, good performance can be achieved even when there is only partial loop, on one or two sides of the house. This is especially true when there is an interior loop and aggregate under the slab. Because of the typical effectiveness of radon mitigation through sump pump , this approach should be among the first consideration in any basement house having a sump pump with drain tile.

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