Waterdrop CoreRO Countertop Reverse Osmosis System Review: an Eco-Friendly and Cost-Efficient Solution for Pure Drinking Water


  • Fast setup and doesn’t require installation
  • The most efficient reverse osmosis system on the market with 3:1 ratio
  • 3-stage filter with an extra long 12-month lifespan
  • Removable water container


  • Requires refilling the water container daily
  • Takes up counter space




Waterdrop CoreRO Countertop RO System is compact, efficient, and sustainable, offering high-quality water and significant savings. An excellent investment for any household.

A countertop RO system brings a plethora of benefits to your home. Not only does it provide clean and delicious water, but it also takes convenience to a new level. The system requires no complicated setup, saving you from the upfront high cost of purchasing a traditional under-stage RO, hassle, and time typically associated with such installations. Furthermore, it doesn’t come with the high installation costs that often accompany traditional water purification systems. Unlike under-sink models, a countertop RO system does not take up any space under your sink, which leaves you with more room for storage. All these advantages make the Waterdrop CoreRO Countertop Reverse Osmosis System an excellent choice for those who value both quality, value, and convenience.

Designer: Waterdrop

Click Here to Buy Now: $199 $249 (20% off, Use coupon code “WDYanko5” to get additional 5% off). Hurry, deal ends in 48-hours!

Aesthetics & Ergonomics

As the name implies, countertop Reverse Osmosis (RO) systems, such as the Waterdrop CoreRO, are designed to be placed on a kitchen or utility room countertop, ideally close to a water source. This placement is not only for convenience but also for the system’s efficient operation.

The Waterdrop CoreRO is designed for compactness, standing just 17 inches tall. This height, considered small compared to other models, is a major selling point. It should fit comfortably under most if not all, kitchen countertops. Despite its powerful purification capabilities, it won’t dominate your kitchen space. It’s crucial, as the kitchen is often a family gathering spot, and the last thing you want is an unsightly appliance on the countertop.

Moreover, its slim yet wide dimensions (15.6 inches by 10.9 inches) significantly add to its compact nature. These dimensions have been carefully chosen to ensure the system takes up minimal space on your countertop while providing ample room for the necessary filtration components. Overall, the Waterdrop CoreRO’s compact design can seamlessly fit into your kitchen setup without disrupting your space or routines.

The front of the device has an easy-to-read touch-screen control panel, and underneath is a drip tray. The filter is inserted into the top left, while the pure water tank sits on the right side. At the same time, the feed water tank hangs out in the back of the unit.

One feature I particularly appreciate is the mode settings, which can store the precise amount of water to dispense. I’ve set the favorite mode to dispense 8oz of water, as this is the daily recommended intake for an adult. The option on the right allows for amounts ranging from 4, 8, 12, and 20 ounces all the way up to 999 oz. It also has a TDS display showing the Total Dissolved Solids in the water. These include small particles like minerals, salts, or metals. The display provides a measurement that allows you to assess your water quality. A lower TDS value indicates purer water.

What sold me is the 40oz removable water container. It’s the perfect size for the refrigerator. The part is it’s convenient to have a few of these containers on hand, prefilter the water, and have them nice and cold, ready to pour for a refreshing drink.


Operating with a “3:1 pure to drain RO filtration,” this system showcases its proficiency in water purification. The “3:1” ratio indicates that for every three portions of clean water it generates, only one portion is wasted, highlighting the efficient use of water resources. This makes the Waterdrop CoreRO Countertop RO System a sustainable choice for clean water.

During the RO process, water is forced through a semipermeable membrane, separating out impurities and contaminants. The Waterdrop CoreRO Countertop System, which is NSF/ANSI 372 Certified, SGS&CSA Tested, and FCC approved, utilizes a 5-stage filtration process, reducing up to 99.9% of impurities. This process includes a PP cotton layer, a scale inhibitor layer, a carbon fiber layer, another PP cotton layer, and a final 0.0001μm RO membrane. The discarded water, often called drain or wastewater, removes the rejected substances from the system. The system strikes a balance between producing purified water and managing wastewater, ensuring clean drinking water delivery while reducing resource wastage.

My family consumes a significant amount of water daily, more than I do, since I primarily drink coffee. They can’t tell the difference between Waterdrop CoreRO and bottled water. More importantly, they prefer its purer taste over the filtered water from our refrigerator.


For several reasons, a countertop RO system, such as the Waterdrop CoreRO, is highly sustainable and better for the planet. First, it reduces the need for disposable plastic water bottles, a major pollution source. Providing clean, filtered water directly from the tap eliminates the need for bottled water and the associated waste.

Secondly, this system is designed with longevity in mind. The 5-stage filter has a lifespan of 12 months, reducing the frequency of replacement and the associated waste. This is significantly longer than many other filtration systems on the market, further contributing to its sustainability.

Moreover, the Waterdrop CoreRO system’s efficient 3:1 ratio ensures minimal water wastage during filtration, a big improvement over less efficient systems that waste more water. The system contributes to water conservation efforts by minimizing water waste, an important consideration given the increasing global water scarcity. The Waterdrop CoreRO Countertop Reverse Osmosis System is a high-performance water purification system that, through its sustainable design, significantly contributes to environmental conservation.


Thanks to its low initial cost, the Waterdrop CoreRO countertop system offers substantial long-term value. This is particularly evident when considering the financial savings and positive environmental impact it provides.

The recommended daily water intake for a family of two adults and two children averages around 240 ounces. Factoring in the system’s cost of $199 plus next year’s filter replacement only comes to less than $300.

Contrast this with the expense of purchasing bottled water. With an average cost of $0.50 per 16.9 oz bottle, the family’s daily consumption translates to approximately $7.10. Annually, this reaches a staggering $2591.50.

Despite the initial investment, the cumulative annual savings become evident. Deducting the total yearly cost of using the filtration system from the annual expense of buying bottled water yields a net annual savings of approximately $2391.50.

Living with two teenagers who participate in sports year-round, it’s crucial for them to consume water beyond the recommended daily intake. Hence, we find great value in the Waterdrop CoreRO system. Instead of reaching for bottled water, my kids use this system to fill up their water bottles.

As a coffee enthusiast, I’ve always found that coffee tastes much better when made with filtered water. I can enjoy this luxury without paying for bottled, filtered water. I’m convinced.


For any household looking for a compact, efficient, and sustainable solution for high-quality drinking water, the Waterdrop CoreRO countertop RO system is an exceptional choice. Its standout features include a hassle-free setup that eschews complex installations, a leading-edge 3:1 reverse osmosis efficiency ratio that signifies its outstanding efficacy, and a 5-stage filter boasting an impressive 12-month lifespan for sustained use. The design includes a removable water container for added convenience alongside a built-in safeguard against leaks, a common issue with traditional under-the-sink systems. While it requires daily refilling of the water container and occupies some counter space, the overall benefits, such as its aesthetic appeal, user-friendly design, top-notch performance, sustainable operation, and excellent value proposition, make it a sound investment for accessing pure drinking water.

Click Here to Buy Now: $199 $249 (20% off, Use coupon code “WDYanko5” to get additional 5% off). Hurry, deal ends in 48-hours!