The WDU21L water degassing system uses a diaphragm vacuum pump to extract as much gas/oxygen as possible from sprayed water. The water to be degassed should be fed into the storage tank from a pressure-free water source (tank, canister, or similar containing deionized water). A spray nozzle is located in the water connection at the top of the storage tank, which directs the water to be degassed into the storage tank in a finely swirled state. The negative pressure created by the vacuum pump can reduce the gas content in the water.