Abstract: A water supply regulating system includes a housing having a water line input conduit and a water line output conduit located downstream therefrom, and in fluid communication with an existing water supply source providing incoming water ingressing the housing. Advantageously, a first mechanism is configured to detect a water leak in the existing plumbing system located downstream of the water line output conduit. Notably, a second mechanism configured to automatically shut off outgoing water egressing the housing via the water line output conduit. A first controller is in operable communication with the first mechanism and the second mechanism. An external host server is located external of the housing and in operable communication with the first controller. Advantageously, a second controller is located external of the housing and in operable communication with the first controller and the external host server.