An irrigation control system is disclosed. The irrigation control system can include an irrigation controller configured to intercept commands sent from a control unit of an irrigation system to one or more valves of the irrigation system. The irrigation control system can also include a master control valve configured to be disposed on a water supply line upstream of the one or more valves. A communications system comprising one or more processors can be configured to receive data from the master control valve over a communications network, the data related to a flow of water through the water supply line. The communications system can be configured to transmit information to the irrigation controller, the information comprising at least one of: current weather conditions, local water control restrictions, local moisture content, location of the irrigation system, user-defined limits, and flow rate of water through the irrigation system.
