Please make them stop getting glasses of water from the sink

lovelovelindsey  There isn't a way to control NPCs from getting a drink of water.  You can get it to stop happening for sims in the active household by turning autonomy off but that doesn't work for NPCs.  The only thing you can do to keep them from doing it is to put your sinks behind a locked door so they can't get to them.

Hope this helps.