H I G H L I G H T S
• Increasing amounts of bentazone, terbuthylazine and metolachlor
• The north part of the reservoir is the most contaminated
• All pesticides concentrations complied with the EQS
• Terbuthylazine, chlorfenvinphos and diazinon showed high risk for aquatic species
• Water resource management must integrate chemical and ecotoxicological evaluation.