涪陵区城乡居民饮水污染现状及预防措施的研究

目的了解城乡居民饮用水卫生现状,及时为防制水源性疾病的流行提供科学依据.方法重庆市涪陵区卫生监督所对辖区内市政供水、2次供水、乡镇水厂、自备水厂、农村分散式饮水开展了调查.结果不同制水单位卫生指标综合合格率:2000年为96.8%、92.4%、86.2%、85.8%,2001年为99.8%、 94.0%、88.0%和86.5%,2002年为99.4%、94.8%、87.0%和81.6%,2003年为100%、99.1%、 92.9%和89.5%,农村为78.6%,不同种类饮水中均未检出军团菌、沙门菌、志贺菌等致病菌,市政供水、2次供水水样中氨氮及亚硝酸盐氮均符合相关卫生标准,乡镇水厂、自备水厂、农村饮水有少量样品中氨氮及亚硝酸盐氮超出相关规定卫生标准.结论除农村饮水合格率较低外,辖区内不同制水供水水质均有较高的合格率,表明该区生活饮用水水质较好.

Subject Study on the contamination of drinking water and relative preventive measures in Peiling District

Objective] To learn the hygienic status of drinking water in urban and rural areas and to provide scientific basis for preventing the invasion of diahydric diseases. Methods] Investigation was made on water for town planning, after supply water, water factories, self-supply water factories and dispersed water-supplying spots. Results] The general eligibility rates in different units were 96.8%, 92.4%, 86.2% and 85.8% respectively in 2000; 99.8%,94.0%, 88.0% and 86.5% respectively in 2001; 99.4%, 94.8% 87.0% and 81.6% respectively in 2002; 100%, 99.1%, 92.9% and 89.5% respectively in 2003. The eligibility rate in rural areas was 78.6%. No pathogenic bacteria were detected in all kinds of drinking water. Water for town planning and after supply water both met with the relative hygienic standard. The content of ammonia, nitrogen and nitrite in water factories of villages and towns, self-supply water factories and drinking water in rural areas exceeded the relative standard.Conclusion] The quality of water supply in different areas has a high eligibility rate except drinking water in rural areas, which indicates a fine quality of daily drinking water.