C.P. Systems provides cathodic protection on cast-iron and ductile-iron water mains in order to prevent corrosion or erosion of the water main. Cathodic protection is the installation of sacrificial anodes at pre-determined distances over the length of the water main. The anode corrodes instead of the main, therefore extending the life of the main and assisting in the prevention of water main breaks and leaks. This process puts off, sometimes for decades, the need for water main replacement with its associated costs and major disruption to services.