Previous work done in the catchment area has demonstrated several potential disposal events of pharmaceuticals, including fluoxetine ; and carbamazepine, propranolol and diltiazem . It has previously been reported that incorrect disposal practices of pharmaceuticals is a global issue, where unused pharmaceuticals are disposed of into sinks, toilets, or rubbish bins . This study also found that leftover tablets and capsules were more likely to be thrown into the bin, whereas liquid medication was likely to be disposed of down the sewage system. As many AAs, including those monitored in this study, can be prescribed in liquid formulations or oral suspensions (table ), education and awareness of the environmental risks of incorrect disposal is essential to ensure unused AAs do not unnecessarily end up in the sewar system.