We have been considering purchasing a Cat drinking fountain. After reviewing our options over on Amazon, we decided on the Petsafe Tiered Cat Drinking Fountain.
Because one of our cats, Tuffy, insists on drinking from the sink, which we discuss here:
https://thewildcatsmeow.com/silly-cat-water-fountain/
Here are links to the articles written over on The Wild Cats Meow:
https://thewildcatsmeow.com/petsafe-cat-water-fountain/
This is the unveiling of the fountain we ended up purchasing:
https://thewildcatsmeow.com/petsafe-drinking-fountain-revealed-cats-love-it/
and finally, here is the video of our crazy cat when he discovered his brand-new drinking fountain.