Waterdrop Reverse Osmosis System Review

Waterdrop Reverse Osmosis System Review (2022)

Are you curious as to whether a reverse osmosis (RO) system can be efficient in water filtration, sleek, and slim? Then the Waterdrop system might be your best bet. Although the manufacturer introduced the tankless filtration system in 2015, the filter has soared in popularity.

In this Waterdrop Reverse Osmosis System review, we’ll explore everything you need to know to understand why the unit has gained a strong foothold in the market. Read on!

Waterdrop Reverse Osmosis: Features

Let’s delve into a few features that make the Waterdrop filter a worthwhile investment.

1. Smart Pressure Pump

The unit utilizes a smart pressure pump to detect the household water pressure and adjust the most efficient RO process accordingly. As a result, it aids in minimizing waste and fasten the water production process for grass refills in a jiffy.

You can filter 400 GPD which translates to filling a standard-sized glass in 12 seconds compared to a mere 75 gallons per day (GPD) that other filters pump. If you’re on the quest for a Reverse Osmosis system that can produce sufficient filtered water for fairly larger households, this unit wraps up your search.

2. Lead-Free Faucet

It’s included in the package for hassle-free installation in your kitchen sink. The faucet comprises an LED light that turns on when it’s in use. Chrome-plated and crafted from brass, the lead-free faucet prevents contamination of the clean water that flows from the system.

3. Carbon Block and Pre-Sediment Filter

Providing the same level of function as two carbon block filters coupled with a pre-sediment filter, this filter eliminates large particles (salt, sand, and rust), chloramines, chlorine, and other chemicals that trigger an unpleasant smell or taste from the water.

5. Activated Carbon Block Filter

Crafted from a natural coconut shell, the unit features an activated carbon block filter that minimizes acidity and the unpleasant taste and odor by returning the beneficial materials into the RO drinking water.

6. Leakage Protector

It’s a built-in device that monitors water in real-time. The leakage protector also disconnects the water and power supply upon the detection of a leak, guaranteeing the safety of the surrounding electrical devices.

7. Tankless Design

Waterdrop Reverse Osmosis System lacks a plastic tank that imparts taste and provides a breeding ground for bacteria. Additionally, the tankless design makes the filter slim and sleek, which means it occupies a fraction of the space compared to the generic RO water filters. Its ability to filter water on demand sets the unit’s tankless design apart from the pack.

8. Seven-Stage Water Purification and Filtration

The smart Waterdrop Reverse Osmosis System contains three composite filters that entail a seven-stage purification and filtration process.

Pre Carbon Block Filter

This water filter has a layer of carbon that is stacked between double layers of PP cotton. The Pre Carbon Block Filter eliminates impurities such as chlorine, rust, solids, and chlorine, making the water odorless and tasteless.

RO Membrane Filter

It’s bigger and more efficient compared to the generic RO filters of other units. Measuring 4.3 inches (width) and 15 inches (height), the RO membrane has the uncanny ability to filter water more efficiently, aided by the pressure pump to curb backflow.

The water passes through the reverse osmosis filter containing the 0.0001μm membrane and translates to at least four stages of filtration. The filtered water has reduced heavy metals, viruses, Total Dissolved Sediments (TDS), bacteria, limescale, and the lack of over 1000 harmful contaminants. It’s this filtration stage that removes up to 99.99% of all contaminants lurking in the water.

Post Carbon Filter

The water passes through this filter containing high-precision carbon granules crafted from natural coconut shells. The Post Carbon Filter boosts the taste while infusing a small number of minerals before allowing you and the members of your household to enjoy the perfect-tasting, ultra-fresh, and gleaming water.

9. Low Wastewater Ratio

Courtesy of the built-in pressure pump, the Waterdrop Reverse Osmosis System has a wastewater ratio of 1:1. It is significantly lower than conventional systems whose ratio is as high as 1:4 or 1:3. The low wastewater ratio curbs wastage by 300%, tamping down your water bills.

10. TDS Indicator

The unit has an LCD panel at its front that depicts the exact TDS level of the filtered water. As a result, you don’t need to buy external equipment to monitor the TDS level.

Waterdrop Reverse Osmosis System: Performance

Waterdrop RO Smart Design

The unit’s tankless design means water must be produced and channeled to the faucet when it’s in use. With a built-in booster pump, the unit delivers optimum pressure for speeding up the reverse osmosis process, filling a standard-sized glass with clean water in a few seconds.

Functioning at 1:1 (filtered water to waste water), the unit has superior efficiency compared to a standard reverse osmosis water filter system that lacks a booster pump. Although most Reverse Osmosis systems generate water at 1:3 or 1:4, wasting 3 to 4 gallons per gallon produced, the Waterdrop RO unit only loses 1 gallon per gallon produced.

Keep in mind that although the system is generally eco-friendlier and more efficient regarding water production, after its initial installation, you’re required to flush it with water for 30 to 40 minutes. The reason is that before this timeframe, the water is unsuitable for consumption but can be used for gardening or cleaning.


Installing the Waterdrop Reverse Osmosis System is a breeze and occurs in 20 to 30 minutes. However, for beginners, installation can take anywhere between 1 and 2 hours. Nevertheless, you should have no qualms completing the process if you’re handy and have the tools you require. Simply follow the instructions that come with the manual, and you’re good to go.

It’s worth noting that you’ll need a drill for the hole to house the additional faucet (unless your countertop or sink comes with a second hole). Furthermore, you’ll have to drill into your drain pipe to connect the drain line. Another crucial part of the installation process is remembering to turn off the cold water supply to install the feed water adapter.

Once you get the ball rolling, you’ll need to flush the system for 30 minutes, after which the LCD panel will stop flickering. Moreover, the front panel will begin displaying the TDS reading. Once the process is complete, the indicator lights will stop flickering and change to a permanent blue.

You also have free rein to connect the Waterdrop Reverse Osmosis System to icemakers and refrigerators. However, doing so will require purchasing additional tubing to connect to the appliance.


Water filter installation and replacement are a breeze. The three different-sized filters slide right into the front of the system case. Additionally, there’s no need to turn off the water supply or tools to replace the filters. Once you twist and pull out the old filter, jerk in the new one, twist it to lock, and you’re good to go. The process of water filter replacement takes less than 5 minutes.

Here are a few pointers to keep in mind during filter replacement.

  • The pre-sediment filter requires replacement every six months.
  • The Carbon Post Filter needs replacement annually.
  • The RO membrane filter must be replaced every two years.

Lastly, the system requires a power supply to function, so ensure a standard 110V outlet is available for this water filtration system. Additionally, the filter will automatically flush for 20 seconds after 2 hours of filtering, saving you the hassle of flushing, scrubbing, or cleaning the water filtration system weekly or daily.

Waterdrop Reverse Osmosis System Review: Pros and Cons

Investing in an osmosis water filtration system for your home is the key to fostering good health and enjoying clean drinking water with great taste. To permit an informed decision as to whether the Waterdrop RO system is an ideal choice for your home, we’ve rounded up its strengths and drawbacks.

  • The unit’s tankless design curbs the water from picking up an odor and unpleasant taste after passing through the RO membrane. The water makes its way from the filter to the faucet and is ready for consumption.
  • The built-in booster pump increases the flow rate by elevating the pressure in the unit, compelling the water to pass through the RO membrane, and prevent backflow that can cause wastage. As a result, the filtered water can fill a glass in a few seconds.
  • The unit is more compact and slimmer compared to conventional RO systems, making it more space-saving and convenient to be tucked away under your sink and bypass daunting installation tasks. In addition, you can install the Waterdrop RO system conveniently without roping in a handyman or plumber.
  • The unit’s coconut shell carbon filter infuses a small number of minerals into RO water. However, if you want water with superior alkalinity, you’ll require purchasing a separate means of water mineralization to infuse greater quantities of magnesium and calcium into the water.
  • If you’re looking to fill bigger jugs of water, you might need to exercise some patience for the unit to produce your desired amount of water compared to a standard RO system with a storage tank.
  • The Waterdrop RO system is slightly pricier compared to its rivals. Therefore, before buying it, you should consider whether or not the unit gives you the best bang for your buck with its perks, particularly its reduced water wastage and tankless design.

The Bottom Line

The Waterdrop Reverse Osmosis System is a game-changer. The compact and sleek design, efficient water filtration for purified water, straightforward DIY installation, and smart functionality set it apart from the pack. Despite the higher price point, this unit is worth consideration, given its unique features. After all, you get what you pay for.


Let’s explore the answers to some of the most commonly asked questions about the Waterdrop Reverse Osmosis System.

Which harmful contaminant can the unit reduce?

The Waterdrop RO system employs advanced composite filter technology that has the uncanny ability to intercept the most harmful contaminants.

  • Turbidity, TDS, odor and taste, scale, chlorine, and chloramine.
  • Carcinogens such as ferric oxide, trivalent (chromium), cadmium compounds, hexavalent, and cadmium.
  • Heavy metals range from aluminum, lead, radium 228/226, copper, mercury, and barium.
  • Micro-organic contaminants such as cysts.
  • Inorganic pollutants such as fluoride, inorganic arsenic compounds, and arsenic compounds
  • Organic pollutants ranging from trichloromethane, benzene, PFOs, asbestos, chlordane, and PFOA to formaldehyde.

What’s the difference between a tank and a tankless RO system?

A tank RO system holds reverse osmosis water, giving you plenty to use when need be. A conventional RO system filters water slowly, taking a minute or two to produce 3 ounces of clean water. If you turn off your faucet for a glass of water the actual reverse osmosis membrane production rate, you’ll need to give it 5 to 10 minutes to fill.

The Waterdrop Reverse Osmosis System has overcome the problem of bacteria colonizing the bladder tank. The absence of a storage tank to fill means the unit won’t function until RO water is required.

Does the Waterdrop RO system produce wastewater?

Yes! All Reverse Osmosis systems produce concentrated water by default to remove impurities. However, compared to conventional RO water filtration systems, this unit produces less concentrated water, saving 300% more. In addition, to tamp down water waste, you can collect the concentrated water and use it to do laundry, mop the floor, or wash your car.

How frequently do you need to replace the RO system?

The Waterdrop Reverse Osmosis system filter has a 2-year lifetime warranty. However, it has a smart faucet that will inform you when the filter is due for replacement.

Does the Waterdrop RO system eliminate arsenic?

As one of the perks of the RO membrane with a filtration accuracy of 0.0001μm, this unit can efficiently diminish arsenic lurking in the source water. With microscopic pores geared towards allowing water molecules to pass through, the membrane effectively traps arsenic, lead, chromium, iron, and other bigger inorganic molecules.

What’s the ratio of wastewater per gallon of filtered water that the Waterdrop RO system produces?

The filtered water to wastewater is 1:1. That means 1 gallon of filtered water is produced per gallon of wastewater.

What’s the ideal water pressure required for this unit to function optimally?

The Waterdrop RO system works excellently with a water pressure that ranges from 14.5 psi to 87 psi.

Amanda Perkins

Amanda began her career as a technical writer for a healthcare group in 2008. Years after getting married and starting a family, she joined her husband Joshua on the Water Filter Authority journey to educate other families and households about safe, affordable, and effective water filtration systems.