Analysis Of The Sanitation Status Of Urban And Rural Drinking Water In Maanshan

Objective Analyzing the quality of urban and rural drinking water and the sanitation status of the water treatment chemicals, in order to strengthen the sanitation management of drinking water and water treatment chemicals, as well as providing the scientific standard for rural water-changing work. Methods Collecting, sorting and analyzing Maanshan hygiene agency and hygiene inspect institute supervision and examination reports of quality of drinking water from three water factories in 1997-2003, Dangtu station of hygiene inspection and disease prevention water quality supervision and examination reports in 2001-2003, statistical data of inspection and supervision on whole Maanshan city's drinking water and water-changing corresponding data of Maahshan Patriotism Hygiene Office. Examining and analyzing the water treatment chemicals being on production and sale by Maanshan enterprises producing drinking water security correlated products and being used by Maanshan central water-supplying units. The principles of collection, examination and evaluation on water treatment chemicals are based on National standard of the P. R. China GB15892-1995 ( Poly aluminum chloride ) and GB14591-93 ( Polymerice ferric sulfate ). Results 1. Did not discover the trend that the headwaters water worsen gradually. The sample qualified rates of drinking water are lower in 2002-2003 than that in 1997-2001 for the rise of requirement standard on muddy degree etc. 2. In 2001-2003, Dangtu central water-supplying units incremented from 53 to 82, besides the population depending on central water-supplying raised up to 61,000, added by 9.1 percents. The population depending on completely treated or partly treated central water-supplying increments year by year. Qualified rates of drinking water are not up to 50% in2001-2003. The amount of micro-organism in drinking water exceeds the standard seriously. 3. The holding rate of hygiene certification of the water treatment chemicals is very high (100%) , however, the total supervision qualified rate always lies on low level. The annual supervision qualified rate of poly aluminum chloride keeps the low level and the qualified rate of polymerice ferric sulfate in 2003 descended obviously than before. Conclusions All levels government supervision sections should stress on and enhance the protection and management of headwaters water. The development supervision sections should enhance the improvement of the craft of system water. The water treatment chemicals enterprises should increase the level of the management. The rural water factories should be deployed unified. The hygiene inspect sections should enhance the work on hygiene inspect and supervision of drinking water and water treatment chemicals, and enlarge the degree of executing hygiene laws.