Pump installation means the pump and its associated pressure system including any equipment and material needed to withdraw, obtain, discharge and store water from a well or a spring. The pump installation includes the spring box, reservoir, pump, pump drop pipe, check valves, well cap or seal, pitless adapter, pitless receiver tank, pitless unit, above−ground dis- charge unit, associated discharge piping and associated connec- tions, valves and appurtenances, pressure tank, sampling faucet, water storage or pressure vessel or structure, the electrical wiring and controls needed to operate the pump or pressure system, and any chemical addition, water treatment device or yard hydrant upstream of the water storage or pressure vessel or building con- trol valve.