System for determining and/or processing state information relating to a water supply grid having at least one central data processing device, a management system, at least one integration device, an information management system and functional units, wherein • the functional units ascertain and provide state information, • the integration device prompts integration of the functionality of the functional units (42, 38, 52, 30...) into the management system such that the management system functionality is extended by the functionality of the respective functional unit and individual functions and/or the functionality of the functional units is/are accessed from the integration device, and • the information management system in conjunction with the integration device, the management system and the functional units (42, 38, 52, 30...) acts as a central database by prompting continuous data and information interchange between the management system and the functional units, wherein the functional units can access data and information of other integrated functional units, characterized in that the functional units include: • an action planning unit for optimum actuation of pumps that are used to produce the flow and pressure in the water supply grid, • a prediction unit for providing a locally resolved estimate of the future water consumption in the water supply grid, • an alarm management unit for delivering fault reports from pumps or valves, or for reporting a leak in a line section or a grid section, • a fault compensation unit that provides one or more solution proposals for fault correction when faults occur in the system on a database and/or rule basis, in conjunction with the action planning unit, the respective fault being corrected by means of automatic execution of commands by the fault compensation unit connected to the management system or by the management system itself, and • a visual display unit comprising functional options for the presentation of geographical data and for the visual display of various states of the system, which communicates with the respective functional unit and the application thereof, transmits selections by a user to the application and responses and results from the respective application to a user, and visually displays temporally and locally conditioned information and data, wherein • the estimate of the future water consumption is used as a basis for the optimization method of the action planning unit, • the fault reports or the report of a leak are taken into account in the pump actuation optimization algorithm and there is an appropriate reaction thereto by virtue of faulty pumps no longer being actuated, areas in which there is a faulty pressure regulation valve, particularly when the valve is closed and no longer controllable, being fed using a different strategy than previously, and high pressures in lines with leaks being avoided. • the functional units ascertain and provide state information, • the integration device prompts integration of the functionality of the functional units (42, 38, 52, 30...) into the management system such that the management system functionality is extended by the functionality of the respective functional unit and individual functions and/or the functionality of the functional units is/are accessed from the integration device, and • the information management system in conjunction with the integration device, the management system and the functional units (42, 38, 52, 30...) acts as a central database by prompting continuous data and information interchange between the management system and the functional units, wherein the functional units can access data and information of other integrated functional units, • an action planning unit for optimum actuation of pumps that are used to produce the flow and pressure in the water supply grid, • a prediction unit for providing a locally resolved estimate of the future water consumption in the water supply grid, • an alarm management unit for delivering fault reports from pumps or valves, or for reporting a leak in a line section or a grid section, • a fault compensation unit that provides one or more solution proposals for fault correction when faults occur in the system on a database and/or rule basis, in conjunction with the action planning unit, the respective fault being corrected by means of automatic execution of commands by the fault compensation unit connected to the management system or by the management system itself, and • a visual display unit comprising functional options for the presentation of geographical data and for the visual display of various states of the system, which communicates with the respective functional unit and the application thereof, transmits selections by a user to the application and responses and results from the respective application to a user, and visually displays temporally and locally conditioned information and data, wherein • the estimate of the future water consumption is used as a basis for the optimization method of the action planning unit, • the fault reports or the report of a leak are taken into account in the pump actuation optimization algorithm and there is an appropriate reaction thereto by virtue of faulty pumps no longer being actuated, areas in which there is a faulty pressure regulation valve, particularly when the valve is closed and no longer controllable, being fed using a different strategy than previously, and high pressures in lines with leaks being avoided.