The water tank kept getting lower.
Every few days, I refilled it. Both of my cats walked past the fountain. Both seemed healthy, active, and completely normal.
So I assumed they were both drinking enough.
But there was one problem.
I knew how much water was disappearing from the tank. I did not know which cat was actually drinking it.
With two Ragdoll cats, Timo and Arya, sharing the same fountain, it was almost impossible to tell whether they were drinking equally. One could have been visiting several times a day while the other barely approached it.
Unless I sat beside the fountain for hours, I had no reliable way of knowing.
That was the real reason I wanted to test the PETKIT Eversweet Ultra.
It was not because it looked futuristic.
It was not because it had a five-liter tank.
And it was not because an AI camera sounds impressive on a product page.
I wanted to know whether a smart fountain could reveal something ordinary observation could not.
After more than six years of using PETKIT products, I have become familiar with the company’s approach to smart pet care. Some features are genuinely helpful. Others can feel like technology added because it looks good in marketing.
The Eversweet Ultra makes a bigger promise than most fountains.
It does not simply provide water. It claims to help owners understand when, how often, and which pet is drinking.
For a single-cat household, that may sound unnecessary.
For a home with several cats, it could solve a problem many owners do not realize they have.
The Assumption Most Multi-Cat Owners Make
When more than one cat shares a water source, it is easy to make a simple assumption:
If the water level is going down, everyone must be drinking.
But the tank only shows the household total.
It cannot tell you whether one cat drank ten times while another did not drink at all. It does not reveal whether an older cat has slowly begun visiting less often. It cannot show whether one pet is avoiding the fountain because of stress, location, discomfort, or competition with another cat.
Cats are also good at hiding changes.
They may continue eating, sleeping, grooming, and moving through the house normally while a small behavioral shift goes unnoticed.
A change in drinking habits does not automatically mean a cat is sick. Diet, temperature, age, activity, stress, and many other factors can affect water consumption.
Still, when a routine changes, more information can help an owner decide when to observe more closely.
That is where the Eversweet Ultra attempts to become more than an expensive water dispenser.
Setup: Simple, but Not Wireless
The box includes the fountain body, stainless-steel bowl, clean-water tank, wastewater tank, lid, power adapter, cleaning brush, and instructions.
Setup took less than 30 minutes, and the manual made the process relatively easy.
However, there is one limitation owners should know immediately:
The fountain does not include a battery.
It must remain plugged in during use.
That affects where it can be placed. You need an outlet nearby, and the cable should be positioned where cats cannot chew or pull it.
For owners looking for a completely wireless fountain, this is not the right product.
The Eversweet Ultra also has more components than a basic bowl-and-pump fountain. That does not make it difficult to use, but it makes clear that this is designed as a smart pet-care system rather than a simple water bowl.
The Five-Liter Tank Is Useful—but It Is Not the Best Feature
The clean-water tank holds five liters.
For Timo and Arya, that amount lasted approximately one week.
That can be a major advantage for busy owners who do not want to refill a small reservoir every day. It is also useful in multi-cat homes, where water can disappear faster than expected.
However, a large tank should not be treated as permission to ignore the fountain for a week.
Water may still be available, but the bowl, tanks, pump, and other wet surfaces need regular cleaning. The correct schedule depends on the number of pets, local water quality, room temperature, and how much hair or food debris enters the drinking area.
The capacity is convenient.
But convenience was not what made this fountain different.
The more meaningful feature was what happened to the water after a cat drank from it.
A Different Way of Handling Used Water
Many fountains continuously recirculate water from a single reservoir.
A cat drinks from the bowl. The remaining water returns to the tank, passes through a filter, and is sent back into the drinking area.
The Eversweet Ultra uses separate clean-water and wastewater tanks.
Fresh water is stored in one tank. Used water can be directed into another. The fountain automatically refills the drinking bowl when necessary.
This means the same water is not simply being circulated repeatedly in the usual way.
Every time a cat drinks, saliva enters the bowl. Small pieces of food, dust, or fur may also collect in the water.
A filter can capture some of that material. But separating clean water from wastewater addresses the issue differently.
Instead of only trying to clean water after it has been used, the system is designed to reduce the chance of that water becoming the next serving.
For owners concerned about freshness, this may be one of the fountain’s strongest design choices.
Still, it was not the feature that changed how I understood my cats’ habits.
That happened when I opened the app.
The Camera Changed the Question
The Eversweet Ultra includes an AI camera with a 140-degree ultra-wide field of view.
Through the PETKIT app, I could watch the fountain area in real time.
At first, the live view felt like a fun addition. It was entertaining to see Timo or Arya approach the bowl, drink, and walk away.
But the real value became clearer over time.
The camera did not simply show that a cat had visited. The AI attempted to identify which cat was drinking and tag the session accordingly.
For the first time, I was no longer watching only the water level.
I could see who had used the fountain.
That difference may sound small, but it changes the usefulness of the information.
A falling water level answers one question:
How much water disappeared?
Individual recognition begins answering a more important one:
Which cat drank it?
The app lets owners review drinking visits and look for patterns over time. In a multi-pet household, that can be more useful than a sensor that only records movement near the fountain.
PETKIT says the system can recognize up to 15 pets, making it especially interesting for homes with several cats.
Visual recognition will not be perfect in every situation. Similar-looking cats, poor lighting, blocked camera angles, or unusual positions may make identification more difficult.
The data should therefore be treated as a helpful record, not an unquestionable medical measurement.
Even with that limitation, the fountain provides something most standard models cannot:
Context.
Useful Data, Not a Diagnosis
A smart fountain cannot tell you that your cat has a medical condition.
It cannot replace a veterinarian.
It cannot measure hydration status, perform bloodwork, test urine, or explain every reason a cat’s behavior might change.
The camera and app can only show patterns.
But patterns can give owners a reason to pay closer attention.
Imagine that a cat normally visits the fountain several times a day. Over the next week, the number of recorded visits drops noticeably.
That does not prove something is wrong.
The cat may be eating more wet food. It may be drinking from another bowl. The weather may have changed. The camera may also have missed a visit.
But the information creates a useful question.
Is the cat eating normally? Is it using the litter box as usual? Is it avoiding the fountain? Has anything else changed?
A loving and attentive owner can still miss small behavioral shifts, especially during a busy week.
Technology does not replace love or observation.
At its best, it helps direct that attention toward something worth checking.
Live Viewing Is Included, but Some Features May Cost More
The app allows live viewing without a subscription.
That means owners can open the app and see what is happening around the fountain in real time.
However, saving video clips or using some cloud-based features may require a PETKIT Care subscription.
This distinction matters because the fountain is already a premium product.
Some owners may be disappointed that every camera feature is not permanently included in the original price. Others may care only about drinking records and live access and may never need the paid plan.
Before buying, consider what you actually want from the camera.
If the goal is to monitor visits and check on a cat remotely, the included functions may be sufficient.
If the goal is to save and review longer video clips, the recurring cost should be considered part of the product’s total price.
Quiet Enough for Cautious Cats
One of the fountain’s strongest everyday qualities is how quietly it operates.
Cats can be cautious around unfamiliar sounds, especially when a new machine is placed near an important resource such as water.
A loud pump may discourage a sensitive cat from approaching.
During testing, the Eversweet Ultra operated quietly enough that Timo and Arya did not appear disturbed by it.
The low noise level also matters to humans.
A fountain placed in a kitchen, bedroom, home office, or living room can become irritating if the pump produces a constant hum.
The Ultra blended into the room rather than continually announcing its presence.
That may not be the most exciting feature on the product page, but it is one of the qualities owners are likely to appreciate every day.
Easier to Clean Than It Looks
A fountain with separate tanks, a camera, and an automatic refill system sounds as though it might be difficult to maintain.
Fortunately, the design avoids many of the inaccessible spaces that make some fountains frustrating to clean.
The major parts can be separated, and the included brush helps reach smaller areas.
I found it practical to clean the system whenever the main water supply became low. That created a natural routine: refill the clean-water tank, empty the wastewater tank, and wash the components before restarting the fountain.
Owners should not wait for visible dirt or an unpleasant smell.
Any device that holds water can develop residue or biofilm. The pump, bowl, tank surfaces, and water pathways should be inspected regularly.
The stainless-steel drinking bowl is a welcome addition because it is durable and generally easier to clean than plastic that has become heavily scratched.
No smart fountain is completely self-cleaning.
The Eversweet Ultra reduces some of the inconvenience, but hygiene still depends on the owner.
Reliability Matters More Than an Impressive App
A fountain can have an excellent camera and a polished app, but those features have little value if the pump does not last.
PETKIT has produced smart pet products for years, and the Eversweet Ultra feels more substantial than many inexpensive fountains.
During testing, the pump operated consistently and quietly.
Long-term durability cannot be fully judged from a short review. Hard water, hair buildup, cleaning habits, and daily usage can all affect a pump over time.
Still, the product appears designed for long-term use rather than frequent replacement.
That matters because the true cost of a fountain includes more than the purchase price.
Replacement filters, possible subscriptions, cleaning supplies, pump replacement, and eventual device failure all affect long-term value.
Who Is This Fountain Actually For?
The Eversweet Ultra is not necessary for every cat owner.
A clean bowl filled with fresh water can work perfectly well.
A carefully maintained basic fountain may encourage a cat to drink without requiring a camera, app, or artificial intelligence.
If you have one cat, observe its habits closely, and do not need remote monitoring, many of the Ultra’s premium features may feel excessive.
The fountain becomes easier to justify in a different type of household.
It may be a strong fit if:
- Several cats share the same water source.
- You cannot tell which cat is drinking.
- You work long hours or travel regularly.
- You want a large-capacity reservoir.
- You value separating fresh water from wastewater.
- You want to monitor drinking patterns over time.
- Your cats will not tolerate RFID collars.
- You are comfortable paying more for automation.
The fountain does not create good pet care by itself.
But it can support a careful owner by making hidden routines easier to see.
What the Camera Really Gave Me
At first, I thought the camera would be a fun feature.
I expected to check in occasionally, watch my cats drink, and perhaps save a few amusing moments.
Instead, it changed the question I was asking.
Before using the fountain, I asked:
“Are my cats drinking water?”
After using it, I began asking:
“Is each cat drinking in a way that is normal for that individual?”
That is a much better question.
Cats do not all drink the same amount. They do not visit at the same times. One cat’s normal routine may be completely different from another’s.
The goal is not to compare them unfairly.
It is to understand each cat’s own pattern well enough to notice when it changes.
That is the real value of the Eversweet Ultra.
Not the camera itself.
Not the AI label.
Not even the five-liter tank.
Its value is the ability to turn a behavior that usually happens and disappears unnoticed into information an owner can review.
Final Verdict
The PETKIT Eversweet Ultra is quiet, thoughtfully designed, relatively easy to maintain, and especially useful in multi-cat households.
The five-liter clean-water tank reduces frequent refilling. The dual-tank system separates clean water from wastewater. The automatic refill feature keeps the bowl available with less daily attention.
But the AI camera is what makes the product distinctive.
It helps owners see who is drinking, not simply that water is disappearing.
That does not make the fountain a medical device.
It does not guarantee every behavioral change will be detected.
And it does not replace regular observation, cleaning, or veterinary care.
The product is also expensive, must remain plugged in, and some video-storage features may require a paid subscription.
For one cat and a highly attentive owner, it may be more technology than necessary.
For a busy household with several cats, however, it can provide something genuinely useful:
A clearer view of a daily habit that is surprisingly difficult to monitor.
I already knew Timo and Arya needed fresh water.
What I did not know was how little the water level alone could tell me.
The tank showed me how much water had disappeared.
The camera showed me who had actually been there.
And that is the difference between simply providing water and beginning to understand how each cat uses it.
So before asking whether your cat needs a smart fountain, consider a more revealing question:
If your cat’s drinking pattern changed tomorrow, how quickly would you notice?
