摘要：Summary. The control of groundwater and surface water quality in relation to the presence of pesticides
and their metabolites is a rather complicated task. National and local authorities with the
responsibility to guarantee an adequate quality of water cannot rely on international guidelines for
monitoring activities. In a national project, forty-three pesticides and pesticide metabolites were
selected on the basis of sale, monitoring and physical-chemical data, and investigated from some
of the main Italian agricultural areas, susceptible to pesticide contamination. Twelve compounds
were found in the tested water samples at levels exceeding the 0.1 μg/L European Union (EU) limit
for drinking water (European Directive 98/83/EC). Maximum levels up to 0.62 were determined.
Several water samples were characterized by the simultaneous occurrence of pesticides and their
metabolites (up to ten). In some samples, the total concentration of pesticides and their metabolites
was higher than the EU limit of 0.5 μg/L. Total triazine concentrations up to 1.02 μg/L were found.
In all the cases the highest concentrations were well below the respective guideline values defined by
the World Health Organization (WHO) for drinking water quality.
关键词：Key words: pesticides, pesticide metabolites, ground water quality
