Prioritization of pesticide environmental transformation products in drinking water supplies.
Receiving waters within catchments may be exposed to many different transformation products following the application of pesticides. As environmental waters are abstracted for drinking water treatment these compounds may pose a risk to human health. This paper describes a prioritization approach for identifying the most important transformation products in drinking water sources. The approach can be applied to different geographical areas that have suitable pesticide usage data. The risk based approach incorporates data on pesticide usage and toxicity as well as transformation product formation, mobility, and persistence. The application of the approach is illustrated for two geographical areas that have good quality pesticide usage data: Great Britain and California. The transformation products with the highest risk index and a complete experimentally derived data set for Great Britain were 3,5,6-trichloro-2-pyridinol, thifensulfuron acid, and kresoxim-methyl acid and for California were carbendazim, aldicarb sulfoxide, and RP30228.
Sinclair
Chris J
CJ
Central Science Laboratory, Sand Hutton, York YO41 1LZ, United Kingdom. c.sinclair@csl.gov.uk
Boxall
Alistair B A
AB
Parsons
Simon A
SA
Thomas
Miles R
MR
D002140:California; D004781:Environmental Exposure / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods*; D008962:Models, Theoretical; D010575:Pesticides / Q000032:analysis* / Q000633:toxicity; D012107:Research Design; D018570:Risk Assessment; D006113:United Kingdom; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*
D010575:Pesticides; D014874:Water Pollutants, Chemical