Why Do Cats Drink Dirty Water?

Why do cats drink dirty water? Our cat likes drinking from the fish pond. Is it dirty? Well to me it is but kitty might have other ideas.

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The pond filter isn’t always turned on and the water can be murky in appearance.  The cat will also drink from a ceramic pot that is near the fish pond. The pot is empty and now doubles as a water dish, regularly filling with water from the reticulation for the garden.

We have noticed that as he has become older he is more likely to drink the water in his water bowl inside the house. This is a fairly recent move, he is 17 and getting to and from the fishpond takes more effort.

FAQ why Do cats drink dirty water?

1. The Location Of The Water Bowl

Often the reason that a cat will seek out water other than the nice fresh water you have supplied, is because of the location of the water bowl. As humans we may think we are doing kitty a favor by putting the food bowl and the water bowl side by side thinking it will be convenient for kitty. However, if the water bowl is too close to the food, the cat will instinctively feel that the water could be contaminated.  This is because in the wild a cat would never drink water that is near freshly killed prey in case the water is contaminated.

2. The Cat Is Looking For Fresh Water

Even the water in the toilet can be fresher than the water in your cat’s bowl.  To us it isn’t, however the water in a cat’s bowl can quickly become stagnant and stale and build up a nasty collection of dust and cat hair and other fragments of dirt.

We have all seen YouTube videos or heard of animals that like to drink water from the toilet or the kitchen sink.  A freshly flushed toilet may seem fresher to the cat than the still water sitting in the water bowl.

3. The Temperature Of The Water

Just like humans, cats can be picky about the temperature of their drinking water. Some cats love to have ice placed in their water bowl when the weather is hot.  Some cats love to lick the condensation from windows and some cats like the warm water in a shower or bath water.

Watch this cat drinking from the fishpond. He is not disturbing the fish he is just drinking.

4. The Size And Shape Of The Bowl

Make sure that you are choosing your cat’s water bowl/water fountain for one that will be easy to drink from. Sometimes we are are lured by the bright, pretty things but essentially the water bowl needs to be practical for your cat.

The size of the bowl/fountain may be uncomfortable for your cat. Some bowls may be too deep or too narrow.

Some cat breeds have a flat face profile. These cats needs to have shallow feeding vessels so if the designer water bowl you have is being ignored, it may be because it is not practical to use from the cat’s standpoint.

If you cat finds it awkward to drink from a bowl he make seek other sources.

5. How Does The Water Taste?

The cat drinks water from the tap

The cat drinks water from the tap

Think about the material your cat’s drinking bowl is made from.  Water can take on the taste of plastic. I don't like drinking from plastic and my sense of smell is nowhere as evolved as that of a cat.
Your cat may have a preference for drinking from stainless steel, ceramic or glass.  

If your cat is heading to the ceramic toilet bowl or bathtub it may be fresh running water he is after.
You may want to consider using a water fountain for your kitty.  Water fountains keep the water fresh and aerated.

Ancestry for cats

It is widely believed that cats descended from desert animals hence the thinking that they were built to survive on little water. Meat is a big part of a cat's diet and moisture was obtained from eating prey.

Cats still need water, however giving them a bowl of water and expecting them to drink from it is not always straightforward. Still water may indicate that the water is contaminated with prey plus cats cannot necessarily see still water clearly.
One of the theories behind why cats drink dirty water is because cats liking running water. To them it signifies freshwater. Another theory is that cats with their keen sense of hearing can hear running water.

What can you do To Encourage The Cat To Drink From A Bowl?


Make sure that the water bowl is thoroughly washed and rinsed daily.


Cats have a keen sense of smell and contaminants or a bowl that has not been properly rinsed and still have the scent of detergent will not be appealing to a cat. 


Your cat may also play with the water in his bowl, swiping with his paws. Those paws may have come straight from the kitty litter, highlighting the need for thorough cleaning.


Try bowls made from different materials. Stainless steel, glass and ceramic are preferable to plastic, however this may take some experimenting.


Think about the depth of the bowl. Can kitty reach the water easily? If the bowl is too deep or the water level too low, kitty will have trouble accessing the water.


Consider a drinking fountain.  Cat water fountains aerate the water to keep it fresh. Cats like the sound of running water and the movement that the water fountain makes.  Some kitties will swipe at the water.  

Cat Water Fountains

How do they work? Do you need one? Are there different types of water fountains?  How do I know what one is the best? and more...

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