I'll say no based on two videos and not trying to find another angle view. I saw an old video that said Obama did a lip dip and not drink, so it's possible most of the EPA officials did the same lip dip trick to pretend to sip. I watched two videos and they had the tap conveniently behind someone in both angles so who knows if the source was bottled water instead or even if it were a tap if there's a filter attached below the sink.