Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

How Often to Change Your Cat’s Water? Vet-Approved Care Tips

Share

cat and orange bowl inside the house

We all know that cats need fresh water daily, but if you have a larger bowl that they don’t empty each day, how often do you need to change it out? The truth is that you need to give your cat fresh water every day, and if they don’t drink it all, you need to dump it out, clean the bowl, and then give them fresh water again.

But why do you need to swap out the water every day, and what can happen if you don’t?

divider 3 paws

How Often Should You Clean Your Cat’s Water and Food Bowls?

While you might not think much about your cat’s food and water bowls, that doesn’t keep bacteria from forming on them. Just like you don’t want to use a dirty bowl or cup for your meals, you shouldn’t expect your cat to use one either.

Because of this, you should clean their food and water bowls every single day. It might seem a little excessive, but there’s a reason you wash your dishes after each use, and your cat deserves the same thing!

Kitten drinking from a water bowl
Image Credit: PicksArt, Shutterstock

How Much Water Should Your Cat Drink?

The amount of water a cat drinks out of a traditional water bowl depends on the size of your cat and the type of cat food you feed them. If you feed your cat wet cat food, it contains 70 to 80% moisture, meaning it can give your cat a lot of the fluids that they need.

Overall, your cat needs about 4 ounces for every 5 pounds of body weight, meaning a 10-pound cat needs 8 ounces of water each day. But since your cat can get their water from their food or their water bowl, sometimes it can be hard to measure just how much water they’re getting.

What Could Happen if You Don’t Change/Clean the Bowl Enough?

You need to take the time to clean your cat’s water bowl daily, and the reason for this all comes down to the inevitable contamination with food particles, dust and bacteria. If you’re not cleaning the bowl enough, your cat may become unwell from drinking water contaminated with bacteria.

Cats are also very fussy about the water they drink. If the water smells or tastes funky because it is not clean and fresh, they may drink less or not drink it at all. Not drinking enough water can also cause problems, for example putting cats at an increased risk of urinary tract issues.

How Often Should You Clean a Cat Water Fountain?

While you need to clean a traditional cat water bowl each day, if you have a fancier cat water fountain-style bowl, you likely don’t need to clean it quite as often as the water is moving and they generally contain filters. However, you still need to follow the manufacturer’s guidelines and on average clean it and replace the water at least once a week, but often every 3 to 4 days, even if the water in the bowl lasts longer than that.

These fountain-style bowls don’t collect bacteria as quickly as traditional bowls, but they don’t stay clean forever. When cleaning the bowl, dump out any water that’s still in the bowl and give them fresh water to prevent bacterial buildup. Be sure to follow guidance on how often to change and replace filters as well, which is usually every 4 weeks.

divider 3 paws

In Conclusion

Now that you know a little more about how often you should change your cat’s water bowl and why it’s so important, all that’s left is for you to take the time to clean it. It can be a pain to adjust to at first if you don’t normally clean them that often, but once you get into a rhythm, it only takes a few minutes each day, and it goes a long way in keeping your cat healthy and safe!

Related Reads:


Featured Image Credit: New Africa, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

Chatting About the Importance of Spaying/Neutering, Cat Retail Shopping Ban & Red-Level Storms | Chatty Cattys, Episode 30

In this episode of Catster’s Chatty Cattys podcast, Nicole and Dr. Karyn are celebrating a major legal win for pets before diving into...

Is Your Cat Happy? Here’s How You Can Tell

Cats have a reputation for being indifferent, even inscrutable. But despite their seemingly ambivalent appearance, cats experience many emotions, including happiness, and they...

Human Brains Age Like Cats – New Study Debunks the 7-Year Rule

If you’ve ever caught your senior cat staring blankly at a wall, wandering the halls at 3 am, calling out for no clear...

Chatting with Devin About Here! Have a Kitten, Fostering, & Why Two Are Better Than One | Chatty Cattys, Episode 29

In this episode of Catster’s Chatty Cattys podcast, Nicole & Dr. Karyn sit down with Devin, the founder and one-woman show behind “Here...

More related

Can Cats Eat Popcorn? Vet-Reviewed Nutritional Facts & FAQ

If you’ve just sat down to watch your favorite movie with a big bowl of popcorn, what do you do if your cat...

Is Declawing Cats Illegal in Australia? Vet-Verified Facts, Reasons & Alternatives

Declawing cats is heavily regulated in Australia, meaning that it is banned as a standard procedure and only permitted if it’s essential for...

How to Get Cat Pee Smell Out Of Wood Floors: 5 Vet-Reviewed Steps & Prevention Tips

Beautiful original wood flooring is the pride of many homeowners. It’s nice to look at and easy to clean—until your cat decides to...

Can Cats Eat Centipedes? Vet-Verified Facts & Recommendations

In the mind of a cat, it may be more exciting to chase after insects and other creepy crawlers than it is to...

Keep reading

How to Tell If My Cat Is Dehydrated: 8 Vet-Reviewed Signs

Cats don’t always advertise when something is wrong, and if your cat isn’t getting enough water, you might not even realize it if you aren’t paying attention. However, dehydration is a serious condition; cats that don’t get enough water will...

tired sick cat lying on bed

Why Does My Cat Walk on Me? 7 Vet Approved Reasons for This Behavior

If you have a cat that walks all over you either when you’re awake or when you’re sleeping, you may find it strange and possibly even annoying. It’s natural to wonder what the cause of this behavior could be, and...

cat on lap

Can Cats Drink Wine? Vet-Verified Safety Information

Many cat lovers appreciate a nice glass of wine in the evening to help them relax. Not only is it a crisp and refreshing drink, but it can also cut the edge after a stressful day and allow you to...

Can Cats Drink Wine

7 Best Litter Boxes for Multiple Cats In 2026 – Reviews & Top Picks

Cats living in a community can be territorial over their spaces, including the litter box. However, if you have a few cats who are happy to share with one another, getting a litter box designed for multi-cat households can take...

Two cats in the litter box

Your Cat Keeps Vomiting After Eating: The 8 Possible Reasons

Cats vomit. It’s one of the less glamorous facts of life with a feline, and most cat owners have cleaned up more than their fair share of it. But when it’s happening consistently after meals, it stops feeling like a...

cat eating kibbles from red bowl

How Long Do Sphynx Cats Live? Vet Reviewed Lifespan, Care Tips & FAQ

You can’t help but notice a Sphynx cat. The large ears and almond-shaped eyes command your attention. It’s no wonder that they are the 10th most popular breed! Of course, the kitty’s outgoing and energetic personality also helps endear them...

calico sphynx cat on the table

Acana Cat Food Review 2026: Recalls, Pros & Cons

Review Summary Introduction ACANA has various premium cat food recipes and flavors that are rich with animal protein and nutrients to ensure that your cat gets everything that they need for a complete and balanced meal. It has diets specifically...

Acana Cat Food Review

Do Senior Cats & Kittens Get Along? Vet-Approved Introduction Guide & Tips

Introducing a senior cat to a new kitten can be tricky. Differences in ages, energy levels, and physical conditions can create tension. But it doesn’t mean that your two cats will dislike each other forever. Introducing your cats to one...

Do Senior Cats and Kittens Get Along

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.