Concentrations of pharmaceuticals and other micropollutants in groundwater downgradient from large on-site wastewater discharges.

ABSTRACT: Large subsurface treatment systems (LSTS) and rapid infiltration basins (RIB) are preferred onsite wastewater treatments compared to direct discharge of treated wastewater to streams and adjacent facilities. Discharge of these wastewater treatments may result in contaminant loading to aquifers that also serve as drinking water sources downgradient from the discharge site. Until recently, few studies have characterized the contribution of micropollutants (e.g. pharmaceuticals, fragrances, flame retardants, etc.) to receiving aquifers. We conducted a pilot project to characterize the occurrence of micropollutants in groundwater downgradient from 7 on-site treatment systems in Minnesota, USA: 5 community LSTS and 2 municipal RIB. One downgradient monitoring well was sampled three times at eac

SUBMITTER: Elliott SM 

PROVIDER: S-EPMC6221291 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature