Occurrence of pharmaceuticals in WWTP effluents and their impact in a karstic rural catchment of Eastern France.
The occurrence of pharmaceuticals in freshwater ecosystems provokes increasing concern due to their potential risk to non-target organisms and to human health. Pharmaceuticals are used in both human and veterinary medicine and are essentially released into the environment via wastewater treatment plants (WWTPs) and from livestock. In this study, 31 pharmaceuticals were analyzed in effluent and surface water upstream and downstream of two WWTPs in the Loue-Doubs rural karstic catchment in Eastern France. Diclofenac (965 and 2476 ng L-1), sulfamethoxazole (655 and 1380 ng L-1) and carbamazepine (566 and 1007 ng L-1) displayed the highest levels in the effluents of both WWTPs. Diclofenac levels were also high in surface water samples 300 and 166 ng L-1in the River Doubs and the River Loue, respectively, followed by paracetamol (273 and 158 ng L-1) and sulfamethoxazole (126 and 73 ng L-1). In both rivers, the most critical compounds were found to be the antibiotic sulfamethoxazole (risk quotient (RQ) from 23.7 to 51.1) and ofloxacine (RQ from 1.1 to 18.9), which reached levels inducing toxic effects in aquatic organisms. This study showed that WWTP effluents are the major sources of the pharmaceuticals, but raw discharges from human residences, pastures and livestock manure represent significant sources of contamination of surface water and groundwater. The aim of this study was to assist scientists and authorities in understanding occurrence and sources of pharmaceuticals in order to improve water quality management in chalk streams.
University of Bourgogne Franche-Comté, Chrono-environnement, UMR 6249 UFC/CNRS usc INRA, 16 route de Gray, 25030, Besançon cedex, France.
Axelle
A
Chiffre
University of Bourgogne Franche-Comté, Chrono-environnement, UMR 6249 UFC/CNRS usc INRA, 16 route de Gray, 25030, Besançon cedex, France.
François
F
Degiorgi
University of Lyon, Institut des Sciences Analytiques, UMR 5280, CNRS, 5 rue de la Doua, 69100, Villeurbanne, France.
Audrey
A
Buleté
University of Lyon, Institut des Sciences Analytiques, UMR 5280, CNRS, 5 rue de la Doua, 69100, Villeurbanne, France.
Loïc
L
Spinner
University of Bourgogne Franche-Comté, Chrono-environnement, UMR 6249 UFC/CNRS usc INRA, 16 route de Gray, 25030, Besançon cedex, France. pierre-marie.badot@univ-fcomte.fr.
Pierre-Marie
PM
Badot
D000818:Animals; D059001:Aquatic Organisms; D004784:Environmental Monitoring / Q000379:methods*; D005602:France; D006801:Humans; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D045483:Rivers / Q000737:chemistry*; D062065:Wastewater; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D060753:Water Quality / Q000592:standards
D004364:Pharmaceutical Preparations; D062065:Wastewater; D014874:Water Pollutants, Chemical
Chalk streams; Pharmaceuticals; Risk assessment; Veterinary use; WWTP
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