The invention relates to water supply systems having decentralized water heating, and can be used in autonomous water supply systems in domestic environments and in field conditions. An autonomous water supply system contains a water reserve container (1) and a water distribution line (2) for distributing water from the water reserve container. The water distribution line is provided with a control unit (3), a water intake means (4) with a pump (5), a water heating means in the form of a heat exchanger (6), a plurality of water distribution means (7), a pressure sensor (8), a system operation indicator (9), a photoreceiver (10a) and a temperature sensor (11). A pump (5) is connected to the water distribution line between the water reserve container (1) and the plurality of water distribution means (7), wherein, connected to the inlet of the control unit (3) are, correspondingly, pressure sensors, the system operation indicator, the photoreceiver (10a) and the temperature sensor (11), while the outlet of the control unit (3) is connected to a pump (5). Acting in the role of a heating element for heating water in the present water supply system is a projector (halogen) light bulb (12) located in the heat exchanger (6) with a coil (6a); the plurality of water distribution means make use of water-conservation nozzles which are installed at the outlet of a discharge fitting of each water distribution means (7).