If its coming through the block, which would not be at all surprising since block is roughly equal to bread in porousity, the block needs to be made water resisitant. This could be done by coating it with surewall or by sealing it with masonry sealer or replacing it with a low porosity brick.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.