Abstract:
Objectives To analyze the hygienic status of water from separated water supply (decentralized water supply) in rural area of Cuiping District and to provide scientific evidence for improving water supply in countryside.
Methods Samples of no less than 3% from 9 612 red rock layer wells dug from 2007 to 2008 in Cuiping, and samples of 79 wells in rural schools were analyzed and evaluated according to Standards for Drinking Water Quality (GB 5749-2006).
Results The qualified rate of total separated water supply (decentralized water supply) was only 22.54%. The qualified rate of Red rock layer well (19.32%) was significantly lower than that of rural school well water (39.24%). The turbidity, visible objects, nitrate and total coliform in rural school well water were better than those in Red rock layer well.
Conclusions The qualified rate of separated water supply (decentralized water supply) in rural areas of Cuiping was poor, and the quality of rural school well water was better than the quality of red rock layer well water. The main contaminants were microorganisms. Strengthening water disinfection is the key measure to control the quality of separated water supply (decentralized water supply) in rural area of Cuiping.