Is hard water bad for cats?

Oct 11, 2023

Is Hard Water Bad for Cats?

As a cat owner, you want nothing but the best for your beloved feline friend. You feed them the finest food, provide cozy places to nap, and shower them with love and attention. But have you ever considered the quality of the water you’re giving them? If you live in an area with hard water, it’s worth asking: is hard water bad for cats? Here’s what to know so you can ensure you’re providing your four-legged friend with the healthiest water.

Is hard water bad for cats?

What Is Hard Water?

Hard water is water that contains a high concentration of minerals, primarily calcium and magnesium. These minerals dissolve into the water as it passes through rocks and soil, giving it a distinctive taste and texture.

How Is Hard Water Bad for Cats?

Hard water is not necessarily bad for cats and is certainly safe to drink. However, over time, it may lead to potential issues for pets. These include:

Digestive Issues

One concern when it comes to considering whether hard water is bad for cats is the possible digestive problems it produces. The excess minerals in hard water can upset your cat’s sensitive stomach and lead to symptoms like vomiting and diarrhea.


Another cause for concern when wondering if hard water is bad for cats involves dehydration. Cats are finicky about their water intake. They prefer fresh, clean water. If your cat dislikes the taste or smell of your hard water—which can be distinctive due to mineral buildup—they may not drink enough, leading to dehydration.

Urinary Tract Infections

Hard water can contribute to the formation of crystals in your cat’s urine, which could potentially lead to urinary tract infections or blockages. These conditions can be painful for your cat and require immediate attention from their veterinarian.

Skin Irritation and Coat Problems

Cats are meticulous groomers, and the minerals in hard water can leave residues on their fur. Over time, this can cause skin irritation and a dull, unkempt coat.

Kidney Stones

Cats are prone to kidney stones and the danger for these is higher due to the minerals in hard water. These can accumulate in your cat’s kidneys over time, leading to painful kidney stones.

What Can You Do About Hard Water’s Adverse Effects on Cats?

Worried your hard water is bad for your cat? Installing a water softener system is an excellent solution for both you and your cat.

This is because water softeners remove the excess minerals that make water hard, resulting in softer, more palatable water. Your cat is more likely to drink enough when the water tastes better. It also won’t have all the minerals that can accumulate in their systems and potentially cause issues.

Not only is a water treatment system, like a water softener, good for your cat, but for your home too. For instance, hard water can cause mineral buildup in pipes and appliances, leading to clogs and reduced efficiency. A water softener can extend the life of your appliances and plumbing system, saving you money in the long run.

When asking yourself “is hard water bad for cats,” it’s important to take the above risks into account. Hard water does not pose an immediate danger. But, over time, it can cause some issues for your feline friends. You can avoid this by giving them access to clean, fresh, soft water at all times. Your cat will thank you for it.

Let Miami Water & Air Help!

We offer water softener installation that will improve the taste, smell, and safety of your water. Contact us to find out more if you’re concerned that your hard water is bad for your cats.

Our complimentary, no-obligation water tests will help you find the perfect water treatment system for your needs.
We noticed a huge difference right a way in the smell and taste of our water. My husband and I could not be happier.
- Happy Customer, North Miami
Miami Water and Air’s service is professional, and their product is well worth ordering. The condition of my water has never been better.
- Brenna Shmitt, Kendall
Worth every penny for it! My dishes look great, my skin feels so smooth, and my water tastes amazing!
- Annmarie Casado, Key West
“We have some extremely hard calcium water in Tucson. Had Kinetico give their information then asked Rainsoft of Tucson for information. From the ...
"Great company. Brian and Matt were awesome to deal with. Would definitely recommend!"
Swipe For More
Our Partners