Draught Works in Missoula MT has countertop glass rinsers or wetters you could call them. You push the glass, upside down onto the base to rinse the glass or growler. They rinse every glass they serve claiming the beer pours with less foaming.
Has anyone else seen this type of rinser in a taproom?
Edit: water in western MT is plentiful so really not an issue of water conservation.
It does return into the aquifer eventually.