As animals go, cats require less water than many others, and we often have a difficult time getting cats to drink as much as we'd like. Cats with certain health problems, especially kidney failure and bladder infections, need to drink more water than an average cat. Increase the number of bowls of water Place a number of water dishes for your cat around the house. You can even place the water bowls in some unusual places.
Cats seem to pay more attention to things that are different.
Vary the types of bowls - low ones, high ones, a drinking glass, a big dog bowl. Again, if it's unusual, cats may try it. Try running water Many cats, including one of mine, refuse to drink out of a bowl. They prefer running water. Some drink from a slowly running faucet, but you don't want to leave a faucet running all day.