Psychiatric　pharmaceuticals　are　the　most　prescribed　active　substances　throughout　the　world　and　their　presence　in　the　environment　raised　concerns.　The　occurrence　and　fate　of　15　selected　psychiatric　pharmaceuticals,　including　eight　benzodiazepines,　four　antidepressants,　one　antiepileptic　and　two　metabolites　of　benzodiazepines　were　investigated　in　wastewater　treatment　plant　(WWTP)　influents　and　effluents,　surface　water,　and　final　drinking　water　in　Shanghai.　Psychiatric　pharmaceuticals　were　in　WWTPs　influents　ranging　from　low　ng　L-1　to　68.2　ng　L-1,　dominated　by　carbamazepine,　doxepin,　diazepam　and　lorazepam.　Target　analytes　were　still　detected　in　effluents　from　low　ng　L-1　range　to　47.3　ng　L-1,　with　carbamazepine,　diazepam,　and　oxazepam　as　most　prevalent.　WWTPs　were　low.effective　(＜50%)　in　removing　most　of　them,　excluding　amitriptyline　(mean　60%),　doxepin　(mean　70%),　temazepam　(mean　78%)　and　lorazepam　(mean　93%).　In　addition,　carbamazepine,　diazepam,　oxazepam　and　lorazepam　were　detected　in　low　ng　L-1　to　75.5　ng　L-1　in　the　surface　water　of　Huang　Pu　Rive.　The　pattern　of　contaminants　in　surface　water　is　similar　to　the　effluent　wastewater,　which　suggested　the　main　source　of　organic　trace　pollutants　might　be　WWTPs.　Furthermore,　carbamazepine　(0.8-2.5　ng　L-1),　diazepam　(0.5-3.2　ng　L-1)　and　alprazolam　(2.3　ng　L-1)　were　also　detected　in　drinking　water　and　the　concentrations　were　below　the　health　based　precautionary　value.　The　investigation　was　within　the　range　of　those　results　reported　in　other　countries.　Our　results　indicate　ubiquity　of　the　investigated　compounds　in　the　aquatic　system.　These　pollutants　may　potentially　reach　drinking　water　via　WWTP　effluents　and/or　surface　waters　and　require　constant　attention.　(C)　2015　Elsevier　Ltd.　All　rights　reserved.