We had one of the water bowls that had a big 3 gallon jug that would just fill the bowl as the dogs drank it. I changed that recently to a weighted 5 liter bowl, so I could control the amount of water the boys were drinking. Some times they start drinking and don't stop till I actually touch them to make them stop. It has helped Elvis us to sleep through the night a little better.
I have to keep my eye on it to make sure they have water during the day, this is the after dinner watering line.