Water Treatment Wath-upon-dearne, Rotherham - Welcome to the Wath-upon-dearne Water Treatment Directory listing recommended water treatment companies in Wath-upon-dearne. It lists those who offer water treatment in Wath-upon-dearne, Rotherham. Do you have a Wath-upon-dearne business? If so, why not advertise it on the Wath-upon-dearne Business Directory - IT'S FREE.