... Fate of Pharmaceuticals in the Environment and in Water Treatment Systems Recently, antibiotics, including the veterinary antibiotic tylosin, which isdescribedinthisstudy,werefoundin48 %of1 39streamwaterstestedin30states,accordingtotheU.S.GeologicalSurvey(Kolpinetal.,2002).Antibioticsenter-ing ... mL in the third and fourth rain events. The manure plustylosin(MT)treatmentwassimilarinmagnitudeandpatterntothemanure-only treatment in the leaching of Enterococcus,suggestingthatthetylosinwasnotactivetoward ... 50 :95 7 96 6.Beaucage,C.M.,Fox,J.G.,andWhitney,K.M. 197 9.Effectoflong-termtetracyclineexpo-sure (drinking water additive) on antibiotic-resistance of aerobic gram-negative intesti-naloraofrats.Am....