Abstract: A pump supply system for furnishing well water or the like which is sensitive to and operates within a range defined by a pressure switch to supply water when pressure in the system falls below a preset minimum pressure and shut off the pump when the pressure reaches a predetermined value. Timing means is employed in the system and preset to time out after a predesignated interval of operation of the pump. The system will retime the next pumping cycle, if that interval of operation is not exceeded. If the pump seeks to operate beyond the predesingated time period, the timing circuit is disabled, the pump is shut down, and an alarm is activated.