Analysis of sanitary condition about partial rural drinking water in Guangzhou in 2008

Objective:Sanitary monitor of rural drinking water quality is one of the important content which is the establishment of monitoring system of public health.It is important to handle the rural drinking water quality and provide feasible methods to solve the questions occurred.Methods:According to GB5749-2006 Standard for drinking water quality and GB/T5750-2006 Standard examination methods for drinking water,we detect each physi-chemical and microorganic item of rural drinking water set in GB5749-2006 Standard for drinking water quality.And the results are evaluated according to GB5749-2006 Standard for drinking water quality.Results:Bulk physic-chemical items of rural drinking water quality of four regions or counties were qualified,but the qualified rate of microorganic items were prone to low.The qualified rate of total bacterial count was 90.9%,total coli group was 84.3%,thermoresistant coli group was 74.4%,free chlorine residual was 62.7% and the qualified rate of the last three items were all lower than 85%.Conclusion:It is the most important intent of rural drinking water management of each region or county to strengthen defecation and disinfection of source water,to ensure the level of free chlorine residual in tap water to rational level and ensure the rural drinking water quality to meet the national standard for drinking water.