Keywords: toxicity stream pyrethroids Systems: stream Substances: Bifenthrin (OXCDWLBJSLVWHB-LKRLXIKPSA-N) Acrinathrin (YLFSVIMMRPNPFK-WEQBUNFVSA-N) Allethrin (ZCVAOQKBXKSDMS-UHFFFAOYSA-N)