I rinse the water bowl (stainless steel) every day and fill it about halfway up. I mix warm water with both Henry's meals (quite a bit, like a soup), so he really doesn't drink much.
The actual bowl is stainless steel, it's easy to clean, holds like 2 gallons of water, I don't know if this makes sense but it like fills as he drinks water (so water is always "fresh" which he really likes) and
THANK HEAVENS, it doesn't spill all over the place when you move it or touch it or refill it.