Water purification system that no waste water produced

The utility model discloses a water purification system that no waste water produced, include control box, running water import and running water export, water purification system configuration has at least one deck coarse filtration filter core, the at least leading active carbon filter core of one deck, at least one deck reverse osmosis filter core, at least one deck postposition activated carbon filter element, and the running water exit is provided with flowmeter and tap, the last limit switch that is provided with of tap. The beneficial effects are that: when tap opens, the whole backward flows of water of postposition activated carbon filter element, reverse osmosis filter core, coarse filtration filter core the inside, through all need abluent filter core and concentrated water to join, flow to tap, detecting tap when the flowmeter, do not have the log raft to go out or during the water shortage, the running water import is opened automation with the solenoid valve in water purification exit, and all concentrated water can all not have water waste normally from the tap discharge with the water that washs the filter core.