Try putting ice cubes in the water. You don't have to buy an expensive fountain. They have plastic waterers you can buy at Wal-Mart for a couple of bucks.

Although I have a fountain (I'm not rich, I found a brand new $39.99 PetMate water fountain on the clearance table of Petco for $20 cuz it didn't have filters). I bought a box of filters for it. My cats LOVE it!! I keep it filled with fresh, filtered water every day. I also keep at least 3 bowls of water with ice cubes around too.