Keywords: toxicity stream Insecticides Systems: stream Substances: Chlorpyrifos (SBPBAQFWLVIOKP-UHFFFAOYSA-N) Allethrin (ZCVAOQKBXKSDMS-UHFFFAOYSA-N) Bifenthrin (OXCDWLBJSLVWHB-LKRLXIKPSA-N) Empenthrin (YUGWDVYLFSETPE-JLHYYAGUSA-N)