This might be a good excuse to put in an aerator valve. We have one installed in the bathroom of our 350DS.
You unscrew your aerator and screw this little water saver on. It has a plastic stick that hangs down from the center of the aerator. Water will only flow when you push or pull the stick gently to the side.
For instance when you wash your hands no water flows while your soaping and scrubbing your hands.
We got ours at Home Depot. This is the only place I could find them on-line so that you could see what I'm talking about. I don't know anything about this web site.
Instant OFF Water Saving Automatice Faucet Control | E3 Living