Cats
Do Cats Really Need a Water Fountain?
Cats are bad at drinking. That's not a quirk, it's a desert ancestry problem, and it shows up later as kidney and bladder disease.
6 min read
USB Cat Water Fountain with Carbon Filter
Running water is the one they will actually drink.
The arched stream is the point. Cats that have learned to drink from a running tap recognise falling water immediately, and will often use this on the first day rather than needing a week to be persuaded.
£26.99
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- Arched stream mimics a running tap
- Activated carbon filter catches hair and grit
- Ultra-quiet pump you will not hear at night
- Clear tank, so you can see the level at a glance
- Comes apart for cleaning without tools
Style: Standard
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Why you'll love it
Made for happy, healthy pets
Cats drink moving water
Still water in a bowl reads as stagnant to a cat, which is why so many barely touch it. A moving stream triggers the instinct to drink, and on a dry-food diet that extra intake is what protects the kidneys and bladder.
The filter is the maintenance
Hair, dust and food crumbs are what turn a fountain into a science experiment. A carbon layer catches them, so the job is swapping a filter rather than scrubbing a slimy bowl.
Quiet enough for a bedroom
A fountain that hums gets unplugged within a week. This one is quiet enough to sit in a hallway or bedroom without anyone noticing it is on.
Good fit if
- Cats that already drink from a tap or shower tray
- Anywhere without a spare mains socket, since it runs off USB
- Homes where a power bank is a useful backup during an outage
- Owners who want to see the water level without lifting the lid
Look elsewhere if
- Your cat is nervous of falling water and prefers a still surface
- You want a larger reservoir for several cats over a long weekend
- You would rather not have a USB cable running to the feeding spot
Falling water versus a moving surface
Fountains split into two rough types: those that push water up into a visible arc, and those that simply circulate it so the surface ripples. Which one suits a cat is largely a matter of what it has already learned. A cat that hangs around the bathroom sink has taught itself that falling water is the fresh kind, and an arched stream reads the same way.
The opposite is also true. A cat that has never seen a tap running can find a visible jet unsettling, and will drink from the pool at the base instead while ignoring the stream entirely. That is fine and no cause to return anything. Both routes deliver the same filtered water, and the arc is there as an invitation rather than a requirement.
Running on USB
USB power is genuinely useful rather than a cost-saving. It means the fountain can sit anywhere there is a phone charger, which in most homes is a much longer list of places than a spare mains socket, and cats are particular about where they will drink. It also means a power bank keeps it running through a power cut, which matters more than it sounds for a cat that has stopped using its old bowl.
The trade-off is a cable across the floor to wherever the charger lives. Route it along a skirting board rather than across an open span, and check it occasionally if you have a cat or kitten that chews. The low voltage makes this far less serious than a mains cable would be, but a chewed cable still stops the fountain.
Carbon filtration
The activated carbon filter does two jobs. Mechanically it traps hair, grit and stray kibble before they reach the pump, which is the main cause of a fountain becoming noisy. Chemically the carbon adsorbs chlorine and some of the dissolved compounds that give tap water its taste, and taste is exactly what a fussy cat is objecting to.
Carbon has a working life. Once the surface is saturated it stops adsorbing and becomes a plain mechanical sponge, which is why a schedule matters more than appearance: a filter can look perfectly clean and be chemically spent. Two to four weeks is the usual window, at the shorter end in a hard water area or a household with several cats.
In the box
Everything you need
- Water fountain
- Pump and USB cable
- Carbon filter
How it works
Simple, from basket to doorstep
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Browse
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Check out securely with card, PayPal or one-tap Apple Pay & Google Pay. Free delivery over £45.
- 3
Delivered
Fast, tracked dispatch straight to your door, and a happier pet before you know it.
The details
Specifications
- Material
- ABS and PP plastic
- Power
- USB, 5V
- Filtration
- Activated carbon
- Size
- 22 x 22 x 26cm
- Weight
- 650g empty
- Care
- Fully dismantles for washing
Keeping it clean
The whole unit comes apart without tools, which matters because the part that needs attention most is the one hidden inside the pump housing. Lift the impeller out monthly and brush the housing rather than rinsing it, since the slippery film that builds up on wet plastic slides away from running water but comes off easily under a brush.
Rinse the tank and stream cover weekly. If you use any detergent, rinse until you cannot smell it at all, because a cat will taste the residue and go back to the bowl. Refill with cold tap water rather than boiled or filtered water, since neither offers an advantage once the carbon is doing its job.
How it compares
| USB fountain | Mains fountain | Ceramic bowl | |
|---|---|---|---|
| Placement options | Any USB charger | Mains socket only | Anywhere |
| Works in a power cut | Yes, from a power bank | No | Yes |
| Water presentation | Visible arched stream | Varies by model | Still |
| Filtration | Activated carbon | Usually carbon | None |
| Reservoir | Smaller, check often | Often larger | Refill daily |
Choose the mains version if you have several cats and would rather refill less often. Choose this one for placement freedom and for the arched stream.
Good questions
Before you buy
Every three to four weeks in a one-cat house, sooner if you have a long-haired cat or more than one. You will see it going grey before it stops working.
Yes, it runs off USB continuously. Run it dry and the pump will burn out, so keep the tank above the minimum line.
Yes. Any standard USB output at 5V works, including a laptop port or a power bank. There is no advantage to a fast charger, since the pump draws very little.
It should be barely audible. Noise almost always means the water is low enough that the pump is drawing air, or the filter is due a change. Top it up first before assuming the pump is faulty.
No, and it makes the fountain easier for the cat to find in a dark hallway. The light is dim and sits under the water, so it does not carry into the room.
Last reviewed 30 August 2026
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