The exclusive model is designed to supply water to an overhead tank from both Sump water and Bore water. One pump is enough it will work for an instance. Initially, a sump water pump is operated to supply water to the overhead tank. If the water in the sump goes below the foot valve level, the sump motor switches OFF and activates the bore motor supplying water to the overhead tank. This one-of-a-kind mechanism maintains a sufficient water level in the overhead tank. Even if the bore water pump is running, the sump water takes precedence. If the sump water level reaches 50%, the bore water pump switches OFF and activates the sump motor to pump water to the overhead tank.