Problems and Countermeasures of Drinking Water Safety by Earthquake Disaster

Objective To study the modes of drinking water supply and the situation of centralized water supply systems and to evaluate the sanitation of drinking water in a serious disaster area after earthquake.Methods The imformation of drinking water supply mode and population coverage were studied before and after the earthquake.Damage,disinfection and management of water supply facilities were collected.The date were compared with the samples before earthquake.Results Before the earthquake,water supply modes were decentralized water supply andsmall-scale centralized water supply.After earthquake,water supply modes were large centralized water supply,water tankers,distributed water supply,small-scale centralized water supply.All of the 28 waterworks were damaged in the earthquake.The qualified rate of drinking water dropped in some monitoring indicators after the earthquake.Conclusions Water supply modes changed greatly after the earthquake.Waterworks were damaged severely.After the earthquake,the quality of drinking water dropped.