The outdoor use of insecticides in urban residential environments has been identified as a potential source of residues detected in urban water bodies and sediment throughout California and beyond. Studies of pesticide wash-off studies from hard surfaces and monitoring studies of insecticide residues at scales from house lots to urban watersheds have provided a wealth of information on the behavior of these chemicals in the environment, and how their off target movement can be mitigated through adoption of best management practices. The datasets from these recent studies have allowed the development and validation of new approaches for modeling the expected environmental concentrations of urban insecticides in aquatic ecosystems, leading to predictions with a level of confidence not previously possible. This new urban residential pesticide exposure modeling approach provides the opportunity to evaluate the effectiveness of best management practices aimed at reducing potential aquatic environmental exposure arising from residential insecticide applications.

Modeling the beneficial effects of urban pesticide application best management practices in reducing pesticide aquatic ecosystem exposure

248th National Meeting (2014)

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