The objectives of this study were
(i) to determine the concentrations of 21 progestagens in swine wastes (flush water
and feces) and environmental samples (surface water and sediment, soil, as well as well water) in two representative
swine farms using ultra-high-performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS), and
(ii)
to investigate the effectiveness of the wastewater treatment systems for removal of progestagens. The results can assist in assessing contamination of progestagens from swine farms, and treatability of these emerging contaminants by existing
waste treatment systems, and then facilitate optimizing waste management practices in swine farms.