A brief description of the portable water design in hotels was introduced in the paper.

Difference between drinking natural mineral spring and drinking pure water;

It illustrates microorganism control measures in bottle-packed pure drinking water production,introduces microorganism index control by ozone sterilization from the creation of ozone,its mixing with pure water,sterilization effect and its influential matters,which to give certain guidance for actual production.

The advantages and disadvantages of the process for pure water production are analyzed according to process advance,sterilizing method,water resource utilization and the relationship with human health,thereby the development direction of potable water in our country is pointed out.

Determination of the common heavy metals in purified water by second-order differential anodic stripping voltammetry;

Simultaneous Determination of Arsenic and Mercury in Purified Water by HG-ICP-AES;

Bacterial detection of water quality in purified water and spring water of Yanan city;

In order to improve the hygienic quality of purified water for drinking and provide guidance for practical production, the influencing factors on the overrun microbiological indexes in purified water before leaving the factory are analyzed,and corresponding countermeasures are put forward in combination with the practical production.