Connor and Murphy don't drink much water. They have dry food available 24/7 and I give them wet food twice a day. They'll take a couple sips every time I wash their dish (4 or 5 times a day, at least, because they're picky and spoiled) but that's about it. I think I probably will get them a fountain.
That sounds quite normal and healthy and yes, a fountain would probably be a great thing for them to have! My calico loves to play in water, so she not only drinks from it, she also bats the stream of water! It's a lot of fun for her.