drain tile disposed about an outer perimeter of the footings to accumulate water adjacent the outer perimeter of the footings;

at least one bleeder conduit disposed beneath the basement floor and connected at a first end to the drain tile located exteriorly of the building and at a second end to a discharge pipe to direct water from the drain tile to the discharge pipe;

a hollow body having first and second ends and a flow passage extending between the first and second ends, the first and second ends fluidically interposed to the at least one bleeder line in a location spaced from the drain tile beneath and covered by the basement floor, the body having an upper portion with an openable end accessible through the basement floor, allowing a fluid stream to be injected into the hollow body through the openable end into the flow passage; and

a one way valve disposed within the hollow body, the valve including a valve member movably mounted in the hollow body for fluid pressure responsive movement between a first position blocking fluid flow through the fluid passage in the hollow body in a first direction from the open end of the upper portion toward the first end of the hollow body and a second position allowing fluid flow from the first end and from the open end of the upper portion only toward the second end of the hollow body in a direction toward a sewer conduit to enable clean out of the bleeder line and the sewer conduit.