NOVELTY - An automated system (10) comprises vessel (30) to facilitate separation of dissolved gas from fluid to produce gas stream and fluid stream, compressors (50) to receive gas stream and compress gas, filtration units (60), sensors (16, 32, 34, 52, 58, 62) to measure operational parameters of system and chemical or physical properties of fluid, gas stream, and fluid stream, and controllers (20) to receive input from sensors, regulate flow of fluid, gas stream, and fluid stream through system, and coordinate operation of system to produce gas and introduce fluid or fluid steam into aquifer.    USE - An automated system for extracting gas from groundwater aquifer (claimed).    ADVANTAGE - Maintaining or restoring the chemical and physical properties of fluid processed through the system to be the same or approximately the same as the initial values before reintroducing the fluid into the original aquifer lessens the environmental impact that may be caused by removing and reintroducing fluid into the same aquifer, minimizing risk associated with high pressure operations and allowing for the use of equipment approved for use at lower pressures which results in reduced equipment costs.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for extraction of gas from groundwater aquifer using automated system which involves extracting fluid containing fluid and dissolved gas from groundwater aquifer, measuring chemical or physical properties of the fluid extracted from the aquifer, transferring the fluid to a vessel, retaining the fluid in the vessel for a period of time to allow dissolved gas to separate from the fluid, compressing the gas, filtering the fluid to remove sediment and bacteria from the fluid, measuring chemical or physical properties of the fluid after the dissolved gas is separated from the fluid, treating the fluid such that chemical or physical properties of the fluid is the same or approximately the same as the measured chemical or physical properties, and injecting the fluid into the aquifer in which the steps before injection of fluid into the aquifer are coordinated and controlled by programmable logic controllers.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the automated system for extracting gas from groundwater aquifer.    Automated system (10)    Sensors (16, 32, 34, 52, 58, 62)    Controller (20)    Vessel (30)    Compressors (50)    Filtration units (60)