Substances: Atrazine (InChiKey = MXWJVTOOROXGIU-UHFFFAOYSA-N) Azithromycin (InChiKey = MQTOSJVFKKJCRP-BICOPXKESA-N) Bentazone (InChiKey = ZOMSMJKLGFBRBS-UHFFFAOYSA-N) Keywords: dynamics Variables: discharge