occurrence and fate of chemicals of emerging concern in coastal urban rivers receiving discharge of treated municipal wastewater effluent

To inform future monitoring and assessment of chemicals of emerging concern (CECs) in coastal urban watersheds, the occurrence and fate of more than 60 pharmaceuticals and personal care products (PPCPs), commercial/household chemicals, current‐use pesticides, and hormones were characterized in 2 effluent‐dominated rivers in southern California (USA). Water samples were collected during 2 low‐flow events at locations above and below the discharge points of water reclamation plants (WRPs) and analyzed using gas chromatography–mass spectrometry and liquid chromatography–tandem mass spectrometry. Approximately 50% of targeted CECs were detectable at stations downstream from WRPs, compared with