Safety of drinking water is a prominent environmental problem worldwide, which is directly related to people's life and health. How to guarantee the safety of drinking water is also becoming globally a hot issue. The paper tries to discuss deeply the main problems about the security system of drinking water in China, which were reflected by the unexpected event that the benzene in the local tap water was over the standard in Lanzhou in 2014. Based on the analysis of the current situation of security system of drinking water in China, we compare domestic and foreign health standards in terms of monitoring indexes, monitoring frequencies and monitoring methods. Combining the foreign advanced experience with the practical situation in China, we put forward corresponding proposals on the basis of the measures to provide a scientific basis for improvement of the safety of drinking water.

drinking water  /  security  /  security system  /  standards  /  contamination accident