11 Water treatment equipment, namely, groundwater treatment systems for perfluoroalkyl and polyfluoroalkyl substances; Water treatment equipment, namely, groundwater sampling systems for perfluoroalkyl and polyfluoroalkyl substances; Water treatment equipment, namely, drinking water treatment systems for perfluoroalkyl and polyfluoroalkyl substances; Drinking water sampling systems for perfluoroalkyl and polyfluoroalkyl substances; Water treatment equipment, namely, wastewater treatment systems for perfluoroalkyl and polyfluoroalkyl substances; Wastewater sampling systems for perfluoroalkyl and polyfluoroalkyl substances