Nowadays we all are suffering from lack of water. In this circumstances rain water harvesting system is one of the most feasible and viable options to overcome the crisis. In this system the rain water is collected from rooftop through rain pipe and is being stored into a reservoir. Then the water is filtered and distributed for drinking and irrigation purpose. In this study the filtration system has been proposed using pulse corona discharge. At the time of water purification with the help of Pulsed Corona Discharge (PCD) technique water is allow to run into a reactor where the atmospheric air or oxygen is available and simultaneously a short duration high voltage pulse creates a Corona discharge. Consequently high voltage discharges are produced by the equipment which is as little as hundred nanosecond in duration and it can be said that it is equivalent to the duration of a lightning strike. This work bears a noble propose to implement the use of Pulsed Corona Discharge and it endeavours to develop a solar fed filtration system so that one can use it off grid as well.