Speciation and variation in the occurrence of haloacetic acids in three water supply systems in England

摘要: An investigation into the speciation and occurrence of nine haloacetic acids (HAAs) was conducted during period April 2007 to March 2008 involved three drinking water supply systems in England, which were chosen represent a range source conditions; these an upland surface water, lowland groundwater. Samples collected seasonally from treatment plants at different locations distribution systems. The highest HAA concentrations occurred system, with average total concentration 21.3 μg/L. lowest levels observed groundwater source, mean 0.6 Seasonal variations significant concentrations; found autumn, when approximately two times higher than winter spring. varied among sources, dichloroacetic acid trichloroacetic dominant system brominated species system. There strong correlation between trihalomethanes HAAs considering all samples same data set (r 2 =0.88); however, poor/moderate each independently.