The Best Cat Water Fountains of 2026: High-Tech Hydration

capacity

A pet water fountain doesn’t have to be huge, but larger models tend to be easier to maintain, and stay full and clean for longer periods of time. Look for fountains that can hold about two liters of water if possible.

Noise

You’ll be amazed at how much a small drop of water in a room can affect your nerves, especially if you’ve never had an indoor fountain before. It feels like a toilet that can’t be closed or a faucet that has been left running. It’s a good idea to take a quick look at reviews or tests to see if anyone complains about the noise. The best fountains provide smooth, flowing water that doesn’t have much, if any, sound.

Cost of filtration and filtering

All of these fountains have some type of filtration that will need to be replaced every few weeks to a few months, depending on the design. If you’re concerned about costs, take a look at our liquidation packages and make sure they’re within your budget. You really don’t want to skip your drinking water filters. Most tend to cost around $10 or so for a package that can last from six months to a year.

Filters and fountains tend to last longer if you use filtered water or softened water in the tank, although this may cost you more.

Portable vs plug-ins

Some of these cat fountains are portable, which means they have rechargeable batteries so you can move them around. This is a big advantage for some homes, where cats may have a favorite drinking spot that they don’t want to deviate from, away from any outlets.

How easy it is to clean

I won’t sugarcoat things: These fountains are always difficult to clean, no matter their design. Dirt, algae and gunk can easily get stuck in the smallest places and it can be difficult to completely remove the gunk, even with vigilance.

The best answers to this problem are units with very simple designs that do not have small crevices, as well as fountains that are easy to disassemble and are dishwasher-ready if possible. The good news is that regular cleaning also gives you frequent opportunities to check and replace the filters.

App controls and alerts

Think about what kind of app alerts you would want from your cat fountain, if any. Some fountains may give you alerts about when to use them, for example, so you can make sure your cat is getting enough water. Others may allow you to control the fountain from afar, turning it on or off when you want. Some offer reminders about when to replace filters, too.

Sensors, schedules and timers

Additional sensors are not usually necessary for these fountains, but they may help. Proximity sensors can be triggered when pets approach, which may encourage or frighten them, depending on the cat. Others may allow you to set a timer when the fountain turns on, so you can turn it off at night when there is noise. Or you can use a Smart plugWhich I’ve done in the past. Cat fountains don’t really have smart voice assistant support, but smart plugs are an easy way to give them that capability.