Abstract: A foundation drain system comprising the combination of a footing, the first course of masonery blocks on the footing having a drain notch for each hollow space on the infacing side of each block. Irregular size and shape stones provided in each of the hollow spaces of the first course of blocks to a level above the notch. A bed of irregular size and shape stones on the interior of the foundation construction contiguous to the footing and to the first course of blocks to a level above the drain notches. A drain tile along the interior perimeter of the footing adjacent thereto in the bed of stones and a discharge pipe connecting the drain pipe extending to the exterior of the foundation.