There's a whole complex system of pumps and drains that take care of this. Same is true for any subway system, underground parking, etc. It ain't gonna be cheap

There's a whole complex system of pumps and drains that take care of this. Same is true for any subway system, underground parking, etc. It ain't gonna be cheap though. EDIT: shotcrete will help some, but is not a solution to. You need a membrane as all concrete is permeable.