In recent years, the hot market with bottled、bottled mineral water and pure water was frequently reported for the two pollution problems because that its management is not standardized, the production process in majority of enterprises does not meet the standards and the lack of strict supervision. And that is hardly reassuring. So, the public drinking water is becoming more and more popular because of its no two pollution. But, to arrive at the successful of the public drinking water , there are three factor , the first is the strong technical –ultrafiltration technology, the second is equipment meeting the actual demand and the third is the perfect management measures.