@GreenSkyOverMe @Testoceratops do you have one of those water fountain things?
We had one for a while, and the cats like it. But algae would grow quickly, so we had to frequently clean it thoroughly; which was a pain because it wasn't easy to clean. (Also the pump made a noise).
These days I just set out several bowls with water: they are easily refilled, and the bowls can be cleaned easily as well.