Spatial assessment of pesticide leaching risk to groundwater: sub‐national decision making and model output aggregation

BACKGROUND This study compares standard regulatory methodology (fixed scenarios and models) to spatial modelling at a 1 km landscape resolution for the evaluation of predicted environmental concentrations of pesticides in groundwater. The use of spatial modelling in the decision‐making processes is discussed and three options for the sub‐national evaluation and restriction of substances based on spatial environmental fate modelling are examined....