Fix Leak, Leak Repair, Pipe Leak, Water Line Leak, Fix Water Line, Repair Water Line LeakMock Plumbing replaced the rusted galvanized water line with both copper and PEX. Copper and plastic pipes are much easier to install and maintain unlike galvanized water pipes. Also, as galvanized water lines age, the interior of the pipe gets clogged with mineral deposits causing internal blockages. Hence, galvanized plumbing pipes are not as widely used now as they once were.