Our invention product named "City water aliving system(CWAS)"can be used to restore the life force of water from dead water such as city water or ground water. The method to live of health or the secret of longevity for human being is the mandatory clause to take good water. This product is application of magnetic energy(hexagonal water) ,wavelength energy of far infrared rays and wave mechanics energy of propolis. 73% of human being's brains cell and 83% of blood is composed with water. Good water mean 1.taste must be good 2.mineral must be abundant 3.must be weak alkali same as blood 4.must be hexagonal structure 5.containing oxygen quantities must be enough 6.must be getting disinfectant 7.must be getting capability of removal active oxygen 8.must be good absorption and eliminate waste matter from the system.9.must be good interfacial tension.(cleaning force) But today we can't expect above good water from the city water,ground water and purifier. Spec