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Ten Years-Snapshot of the Occurrence of Emerging Contaminants in Drinking, Surface and Ground Waters and Wastewaters from São Paulo State, Brazil
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Researchers compiled 10 years of emerging contaminant monitoring data from São Paulo state, Brazil, analysing 58 compounds including hormones, pharmaceuticals, pesticides, and illicit drugs across 708 water samples from 2006 to 2015. Preliminary aquatic risk assessment identified caffeine, paracetamol, several hormones, bisphenol A, and multiple pesticides as posing potential risks, while drinking water concentrations for 22 monitored compounds remained below adverse-effect thresholds.
Emerging contaminants have been considered one of the main concerns for ensuring the quality of water around the world. This work presents the results of 10 years of analyses carried out in the state of So Paulo (Brazil) that has the high population density and intense agricultural and industrial activities. In this work 58 compounds (9 hormones, 14 pharmaceuticals and personal care products, 8 industrial compounds, 17 pesticides and 10 illicit drugs) were determined from 2006 to 2015 in 708 samples including raw and treated sewage, surface and ground and drinking waters. A preliminary risk assessment for aquatic life protection identified potential risks for caffeine, paracetamol, diclofenac, 17-ethynylestradiol, 17-estradiol, estriol, estrone, testosterone, triclosan, 4-n-nonylphenol, bisphenol A, atrazine, azoxystrobin, carbendazim, fipronil, imidacloprid, malathion and tebuconazole. Drinking water criteria were available only for 22 compounds and for them no adverse effects were expected at the concentrations found, except for 17-estradiol.
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