Water purification system

A water purification system, comprising:

• a composite filter-cartridge assembly comprising a filtering housing and a composite filter-cartridge disposed in the filtering housing, the filtering housing having a raw water inlet, a pure water opening, a pure water outlet and a concentrated water outlet, the composite filter-cartridge comprising a filtering assembly and a taste improvement filter-cartridge disposed downstream from the filtering assembly, the pure water opening being coupled to a water outlet end of the filtering assembly and coupled to a water inlet end of the taste improvement filter-cartridge;
• a booster pump connected to the raw water inlet;
• a waste water solenoid valve connected to the concentrated water outlet;
• and
• a water storage device connected to the pure water opening via a water storage pipeline, wherein two ends of the water storage pipeline are both connected to the pure water opening, and the water storage device is configured for storing pure water flowing out of the pure water opening.