Warren County Middle School is getting an upgrade to its plumbing system.“We’re replacing 60-year-old galvanized pipes,” said maintenance director Donnie Caldwell. “They’ve become a problem.”Most of the pipe used pre-1960s was galvanized steel. Galvanized pipes corrode and sediment builds up on the inside over time making the inside diameter of the pipe smaller and smaller over time, creating low water pressure.The county Financial Management Committee met Thursday to consider a request from the Warren County School System to accept a bid from Warren Mechanical Contractors for $27,891 for the project.