Aupool finished swimming pool adopts AWTS water treatment scheme developed directionally, and its turbidity, pH value, residual chlorine, urea content and total bacterial count are superior to national and industrial standards. In theory, there is no need to change water in Aupool finished swimming pool. The powerful AWTS water treatment system can always keep the water quality index in the swimming pool better than that of ordinary tap water. Changing water means "poor water quality"