Water Line Leak, Water line, Fix Leak, Leaking Water LineMost of the leaking water line under a slab are abandoned and re-routed in the attic. However, this is not feasible in this particular job which was a two story town house with no attic between the first and second floors to re-route. Mock Plumbing had to jack-hammer the cement in the kitchen in order to gain access and fix the leaking copper line below the slab.