Cat Water Fountain – HydroBuddy 4L Stainless Steel
Fresh, flowing water from stainless steel. Your cat drinks the way nature intended.
Or pay in 3 interest-free instalments of €32,79 with Klarna
- Always flowing, double-filtered water
- Stainless steel: no plastic where your cat drinks
- App alert when water is low or the filter is old
- Whisper-quiet and apart in seconds
Everything that's included
Total: You save
The extra filters are on pre-order and ship end of October. Your fountain already includes 1 filter set, so you can start right away.
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“Smartpaw provides such a nice customer service and support.”
Mahmoud Jammal · TrustpilotFast & free delivery
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What owners say about SmartPaw
★★★★★ Real reviews from Trustpilot · 4.4 out of 5 on Trustpilot
“Smartpaw provides such a nice customer service and support. We had initial issues to use the fountain that we bought from them, Smartpaw directly answered to our needs and helped us.”
Mahmoud Jammal · Trustpilot“Parfait produit de bonne qualité. Super rapport qualité prix. Je recommande. Très bon contact service client.”
Vidal Céline (review in French) · Trustpilot“Fantastisch apparaat! Onze poezen moesten even wennen maar nu gaat het super goed. De fontein is stil en is mooi compact. Schoonmaken gaat prima.”
Marianne (review in Dutch) · TrustpilotWhy your cat drinks too little
Cats have a weak thirst drive. They descend from desert animals and used to get most of their water from prey. A still water bowl doesn't help.
of cats over 10 have chronic kidney disease
Cornell UniversityThe pet bowl ranks 4th among the germiest items in the home
NSF Internationalmoisture in dry food. A mouse, your cat's natural prey, is about 70% water.
Why cat parents switch to the HydroBuddy water fountain
Stainless steel
No scratches where dirt can hide, and no plastic taste.
Double-filtered
A foam filter catches hair, a carbon filter removes odours and chlorine.
Smart app
Track the water level and get a reminder when the filter or a clean is due.
Whisper-quiet
A quiet pump and a sleep mode. It can even go in the bedroom.
Easy to clean
The fountain comes apart in seconds.
4-litre capacity
Enough water for several days, even with several cats.
HydroBuddy vs. ordinary water bowls and fountains
| HydroBuddy | Plastic fountain | Water bowl | |
|---|---|---|---|
| Flowing water | ✓ | ✓ | ✕ |
| Filtered | ✓ | ✓ | ✕ |
| No plastic | ✓ | ✕ | ± |
| Low-water alert | ✓ | ✕ | ✕ |
| Filter alert | ✓ | ✕ | ✕ |
Flowing water invites your cat to drink
Cats naturally prefer moving water. To them, flowing water means fresh water.
- A gentle stream and a wide drinking dish
- Choose a continuous or calmer flow in the app
- Ideal for cats that drink too little
Stainless steel instead of plastic
Plastic scratches, and bacteria settle in those scratches. Vets also link plastic bowls to feline chin acne.
- Hygienic and scratch-resistant
- No plastic smell or taste
- Looks great in your home
The app thinks along with you
No more guessing whether there's water left or when to replace the filter.
- Water level at a glance
- Reminders for filter and cleaning
- Sleep mode for the night
Apart in seconds
Lift the top and every part comes loose. Rinse, put back, done.
- No awkward corners
- Swap the filter in no time
- A new filter every 2 to 3 weeks
From box to flowing water in four steps
No tools, no app required to get started. Ten minutes and you are done.
1
Click it together
Drop the filter pad into the pump housing, set the stainless steel plate on top and place the clear spout in the middle. Five parts, no tools.
2
Connect the pump
The pump clicks under the plate and its cord runs out through the side channel. Plug it into any socket - the HydroBuddy runs on mains power, so it never needs charging.
3
Fill with fresh water
Fill the stainless steel reservoir straight from the tap, up to 4 litres. That is enough for several days, even in a home with more than one pet.
4
Follow it in the app
Connect the fountain to the app and you see the water level at a glance, get a reminder when the filter or a cleaning is due, and switch between Normal, Smart and Pause - or set it to sleep at night.
Which fountain fits your home?
Side by side, so you can see exactly what you are choosing between.
FlowMate Pro
€44,99
| You are here
HydroBuddy
€63,75
| 
AquaPaw
€84,99
| |
|---|---|---|---|
| Capacity | 3.5 L | 4 L | 2.5 L |
| Power | With cable | With cable | Wireless |
| App control | No | Yes | Yes |
| Material | Stainless steel surface | Full stainless steel | Stainless steel surface |
| View | This is the one you are viewing | View |
Everything else you might want to know
What is in the box, how the filter works, the full specs and how we ship.
What's In The Box?
- 1× HydroBuddy fountain: fully stainless steel top that's hygienic, scratch-resistant and easy to clean.
- 1× filter set: triple filtration for fresh, great-tasting water.
- 1× cleaning brush: for quick, thorough cleaning of the fountain and pump.
- 1× quiet pump: ultra-quiet flow, under 23 dB, safe day and night.
- 1× power adapter: plug in and you're ready to go.
- 1× user manual: easy setup, plus the free app for notifications and flow control.
How The Filters Work?
The HydroBuddy uses a triple filtration system:
- Foam: traps hair and debris.
- Activated carbon: reduces odours.
- Fine filter: keeps the water clear and fresh.
The app tracks the filter status and notifies you when it needs attention. Replace the filter set every 2 to 4 weeks for the best water quality.
Specifications
- Capacity: 4 L
- Material: fully stainless steel top, BPA-free body
- Dimensions: 23.8 × 23.5 × 11.4 cm
- Weight: 2 kg (without water)
- Power: DC 5V 1A adapter
- Noise: ultra-quiet, under 23 dB
- App: yes — water-level & filter notifications, adjustable flow
Shipping Information
We ship to Belgium, the Netherlands, France and Luxembourg. Orders placed on a business day are processed within 24 hours and sent via DPD.
- Belgium & the Netherlands: 1–2 business days
- France & Luxembourg: 2–4 business days
Free shipping on orders from €50. Below that a flat fee applies, shown at checkout before you pay. You receive a track & trace link by email as soon as your parcel leaves our stock.
Returns: 30 days. Start it yourself in our return portal — no account needed, and you receive a free return label by email once approved.
Frequently asked questions
My cat doesn't drink from a fountain straight away. What now?
Completely normal. Place the fountain next to the old bowl for the first few days and choose a gentle flow in the app. Most cats come round within a few days. Only remove the old bowl once you see your cat drinking from the fountain.
How often do I replace the filter?
Every 2 to 3 weeks, depending on how many pets drink from it. The app reminds you. With the 1-year pack you're covered.
Is the fountain really quiet?
Yes. The pump is quiet and there's a sleep mode, so it can go in the living room or bedroom.
Is it suitable for several cats?
Yes, 4 litres is enough water for several cats.
How do I clean the fountain?
Take it apart, rinse the parts and put it back together. The app tells you when it's time.
What if I don't like it?
You have 30 days to change your mind and a 2-year warranty. Questions? Our team in Ghent is happy to help.
Give your cat fresh water today
Try the HydroBuddy risk-free, with 30-day returns and a 2-year warranty.
Choose your packSources: Cornell Feline Health Center (chronic kidney disease), NSF International Household Germ Study (2011). This information does not replace advice from your vet.
Onze partners
Who we are
Just love. No hassle.
We're two young entrepreneurs from Ghent, Belgium, who started this project at the end of 2025.
Our goal: help pet owners keep the love and lose the hassle. So many pets simply don't drink enough, and that quietly leads to kidney and urinary problems. We want fresh, flowing water to be the easiest part of caring for them, never something you have to worry about.
We stay close to our customers, reach out anytime, we reply personally on WhatsApp.
