I have two of these that I have been using with my ducks for the past two years. The depth of the bowl gives them the ability to clear their nostrils. I have a drinking area adjacent to the food troughs with river rock underneath. Because of this and the shape of the bowl, I have continuous drinking water but do not a have water contamination problem in or around the feed. Excellent product.
I have 6 of these for over a year, connected straight to a well and have had no problems except the screen filling with sand, too much in the well. Removed the screens and never had another problem.