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.

Can Cats Drink Alkaline Water? Vet-Reviewed Nutritional Fatcs & FAQ

Can Cats Drink Alkaline Water

While alkaline water may have some health benefits, it should not be provided to felines. Alkaline water can harm a cat’s digestive system, so it should be avoided after they have eaten. In some cases, too much alkaline water can interfere with digestion.

However, cats don’t usually consume enough alkaline water for serious problems to occur. Your cat would have to drink only alkaline water for adverse effects to appear.

In other words, a little bit of alkaline water isn’t going to hurt most cats. Instead, they would have to drink mostly alkaline water for it to matter much.

Generally, we recommend a natural source of water that has not been tampered with. Tap water usually works as long as your water is safe to drink. If you aren’t under a boil warning, your tap water is perfectly safe for your feline to drink.

You may want to install a filter if your cat has underlying problems that require extra clean water. However, the filter should preferably not alter the pH, which needs to stay in a normal range.

divider 3 paws

What pH of Water Should Cats Drink?

Since cats don’t need alkaline water, what pH water do they need?

Preferably, cats need water in the normal range, which is around 6.3. However, cats aren’t picky about the pH in many cases. As long as it is around a 6, they are fine.

In the real world, cats are likely drinking water that ranges in pH. Therefore, even if they drink more alkaline water, it should balance out with the other water that they’re drinking. The problem arises when they only drink alkaline water, which might occur if their owner only provides bottled, alkaline water.

In those cases, the pH of the water would not balance out over time, eventually leading to severe problems. Anything outside the normal range can upset your cat’s digestive system pH. When this occurs, it may affect your cat’s ability to digest food normally. They may also experience other digestive problems, like stomach upset.

cat drinking water
Image Credit by: rihaij, Pixabay

What Happens if a Cat Drinks Alkaline Water?

If your cat only drinks a small amount of alkaline water, the odds are that they won’t be affected. While their system will not be used to the alkaline water, a small portion won’t make much of a splash.

However, problems will occur if your cat drinks too much alkaline water. Your cat’s digestive fluids may be affected if consumed in high amounts. They could become less acidic thanks to the alkaline water, which may, in turn, affect their ability to break down food.

In the short term, this is likely to cause digestive issues. Your cat may experience stomach pain and diarrhea. But, over time, malnutrition will occur. Your feline will be unable to digest their food correctly, and they won’t get the necessary nutrients.

Furthermore, the second your cat sips alkaline water, their stomach acid will likely become less acidic. Therefore, the food they eat during this time may not digest properly. Luckily, as long as they don’t drink too much, the problem should fix itself as the stomach acid becomes acidic once more.

However, you mustn’t provide alkaline water when your feline is eating. Their meal may not be adequately digested if they drink too much. In some cases, cats may refuse to eat since doing so may upset their stomach after drinking alkaline water.

Of course, being unable to digest their food may also cause lethargy, further making your cat unable to eat. Ultimately, this may leave you with a tired cat that refuses food, which would call for a trip to the vet.

Therefore, while you should pay attention to your cat’s water needs, there is no reason to seek out water of a particular pH. Instead, you should provide your cat with water within the normal range.

water bottles
Image Credit by: Hans, Pixabay

divider 1 paws

Is Tap Water Okay for Cats?

Your tap water is excellent for cats unless you live in an area with a boil water warning. It is a common misconception that bottled water is cleaner than tap water. As long as your home’s pipes are well cared for, the tap water you get from your faucet is probably the same as that from a bottle.

Tap water is often a bit healthier for your cat than bottled water, as it contains essential nutrients and minerals that not all bottled waters contain. While water usually contains these minerals in tiny amounts, they can be enough to cover any nutritional gaps your cat may be experiencing.

The CDC states that the United States tap water is extremely safe—one of the safest water systems in the world. All public water systems undergo regular testing and fall within the EPA’s safe range. Bottled water is held to the same standards. Therefore, while many companies may claim that bottled water is cleaner, it typically isn’t the case.

As long as the water is safe for you to drink, it is safe for your feline. In many cases, tap water is the best option for your cat since it doesn’t contain any pH differences and is as close to natural water as possible.

cat drinking from faucet
Image by: Sample Stars, Shutterstock

What Kind of Water Should Cats Drink?

Preferably, you want your cat’s water as clean as possible. Water with additives or alkaline water isn’t suitable. It may even cause health problems since it can affect the pH of your cat’s digestive system. We also do not know how added minerals and other ingredients may affect your feline.

Therefore, it is best to stick to filtered tap water when possible. You do not want to use distilled water since it is acidic and can cause stones.

divider 2 cats

Conclusion

While alkaline water may benefit people, you should avoid giving it to your feline regularly. Generally, water with too high of a pH can affect your cat’s digestive system and potentially raise the pH of their stomach acid, which can prevent them from digesting food.

Therefore, it is best to avoid alkaline water. Instead, your cat needs water at a pH of around 6, though slightly more plain water is fine. You want to give them water that has not had its pH changed for the most part.

Typically, tap water is excellent. It is the cheapest (and often the safest) option there is. As long as you can consume tap water, your feline can drink it.

Cats rarely need their water adjusted. However, if your cat has health problems, be sure to talk to a vet about their water. Sometimes,  minerals in the water can affect cats with underlying problems. However, the pH is typically not something that vets recommend adjusting.

Need veterinary advice but can't get to the clinic? Catster recommends PangoVet, our online veterinary service. Talk to a vet online and get the answers and advice you need for your cat without having to leave your living room — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

See Also: 


Featured Image Credit: Food Impressions, 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.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Can Cats Drink Tuna Water? Vet Reviewed Facts & Consideration

As carnivores, felines must consume meat protein as their main source of nutrients to maintain happy and healthy lives. This is why the...

10 Best Lysine Supplements for Cats in 2025 – Reviews & Top Picks

Lysine is often used to treat symptoms commonly caused by feline herpesvirus infections. If your cat is diagnosed with this condition, your vet...

Where to Put Your Cat’s Litter Box: 12 Tips for Choosing the Perfect Location

A necessary part of bringing a new cat into your home is buying them a litter box. But just like how getting the...

Fever Coat in Kittens: What Is It? Vet Reviewed Science & Facts (With Pictures)

Do you have a kitten that seems to have mysteriously changed colors? If so, they may have a fever coat. Although “fever coat”...

More related

10 Best Cat Carriers in 2025 – Reviews & Top Picks

Traveling with your cat can be stressful, especially if your cat has high anxiety while traveling. When you have to load up your...

Can Cats Eat Hemp Seeds? Vet-Reviewed Facts & FAQ

Cats like to explore their surroundings, and their adventures often lead them to foods and items they should avoid. With cannabis products becoming...

Are Polka Dot Plants Toxic to Cats? Vet-Reviewed Houseplants Examined

The polka dot plant (Hypoestes phyllostachya) is also known as the pink polka dot plant, the measles plant, baby’s tears, or freckle face....

10 Best Cat Harnesses of 2025 – Reviews & Top Picks

If you’re a proud cat parent, you know that your furry feline is a natural born explorer. Whether it’s chasing a toy mouse...

Keep reading

Why Do Cats Shed So Much? 8 Possible Causes & When to Be Concerned

Shedding is a shared experience among cat owners. All cats with fur shed, even if they’re regarded as low-shedding or hypoallergenic breeds. So, it’s perfectly normal to find cat hair around your house. However, shedding does become concerning if you...

shedding cat lying on the gray sofa

Do Neutered Cats Still Mate? Vet-Approved Facts

Neutering a cat involves surgically removing a cat’s reproductive organs to prevent them from reproducing. It is done by a veterinarian by the time most cats are around 4 months of age or sexually mature. Owners may choose to get...

Close-Up Photography of Tabby Cats Laying

Why Do Cats Fall Over in a Harness? Our Vet Explains

Trigger Warning: The study described below includes harm done to cats in a laboratory setting and may be upsetting to some readers. Please proceed with caution. Keeping a cat indoors is proven to increase their lifespan and reduce the risks...

cat with harness sitting in the garden

Why Does My Cat Lick My Lips? 10 Likely Reasons

Having a cat as a family member can bring you love, adventure, and even confusion. We may never fully understand cats and some of their antics, but it’s clear cat lovers welcome most of them with open arms. When your...

Gray cat licking owners face

Can Cats Sense the Death of Another Cat? Feline Truth Unveiled

Cats have many strange behaviors and are associated with many myths and legends. People often even attribute magical properties to them. However, one power that might have some truth is that cats can sense the death of another cat. Keep...

Cats Cudduling in a couch

Are Indoor Cats Happy & Fulfilled? Vet-Verified Facts & FAQ

Many cat owners wonder about the happiness and well-being of their cats when it comes to keeping them indoors. On one hand, there’s the idea that a cat should be free to roam outside; on the other hand, some argue...

white Maine Coon cat at home

6 Weird Things Cats Eat: Vet-Reviewed Safety Tips & Considerations

It’s normal for cats to eat weird and wonderful things, but just because it would be weird—and gross—for us to consume doesn’t mean that your cat feels the same way. Things like mice, birds, bugs, and lizards are easy prey...

Weird Things Cats Eat

Why Do Cats Drink Out of the Toilet? 6 Reasons & Vet-Reviewed Solutions

Cats drinking out of toilets can be unpleasant, but it does happen. If you have a cat that loves to drink out of the toilet, you likely have questions, such as, “Why me?!” We’re here to help. Here are the...

cat gets into the toilet close up