Abstract: A filtration system is provided that may be used in remote areas; a pump for forcing water through a filter is powered by at least one solar panel and may force water through the filter in either direction; in a filtering operation, water is passed in a forward direction until a pressure sensor measures that the water pressure on the filtered water side of the filter has dropped to a predetermined level, at which point water is forced through the filter in the reverse direction. A controller is configured to control the operation of the pump.

Abstract: A pump system for a pressure sewer system, comprising a pump, a cutter and an electric motor configured to drive the pump and the cutter; the pump system comprises a current sensor that measures the electric current provided to the motor and the controller stops the operation of the motor if the current drawn by the electric motor exceeds the predetermined threshold.