Abstract: The establishment and improvement of the drinking water safety guarantee system can help water supply enterprises to use the standards as the basis for the development of water affairs,play the auxiliary role of technical standards for production,and provide comprehensive technical and theoretical support in the whole process of water supply. In actual production,water supply enterprises shall strictly implement mandatory national standards,reasonably select and implement industrial standards,local standards or group standards,formulate relevant enterprise standards according to their own conditions and needs,improve internal control management and optimize operation mechanism,make full use of the guiding role of the technical standard system in the work and help the stable development of drinking water safety assurance.

Key words: technical standard, whole process of water treatment, guiding role