We have a reverse Osmosis system to install. Because our countertop is quartz and rather then have another hole drilled I was wondering if I actually need to have it at a sink. I know it would be best at a sink with the drain but they also have the taps as pot fillers that are not above a sink. I could put it in our pantry. I don't have access to a drain there. Let me know your thoughts on this please. Thank you.