Many of us live in rented apartments where the rent agreement restricts us from making any kind of plumbing modifications. Moreover, some of us have granite countertops in which drilling a hole to install an RO faucet, is extremely difficult. Situations like these prevent us from using an under-sink reverse osmosis water filter that needs an RO faucet.
Luckily, we can use installation-free countertop reverse osmosis without drilling holes or making any kind of plumbing modifications. They are portable, require no permanent installation, and are completely independent systems. So, we can place them anywhere we like, including kitchen, dining room, office room, RVs, mobile homes, etc.
Use 5 Best Reverse Osmosis Without Drilling Faucet Hole
1) AquaTru — Countertop Water Filtration Purification System with Exclusive 4-Stage Ultra Reverse Osmosis Technology
- The Aquatru Countertop Reverse Osmosis water filter is NSF 58 certified.
- It comes with an LCD and a TDS monitor,
- AquaTru provides ZERO TDS water by filtering in 4 stages.
- Its water supply speed is about 70-80 gallons per day, 1 gallon in 12-15 minutes.
- It has an industry-standard 1 liter filtered water: 1.6-liter Waste Water drain ratio.
- Uses 3 Filter Cartridges, A Pre/Carbon Filter, A R.O. A Filter and A VOC Filter
- Cartridge replacements are needed every 6-9 months.
- AquaTru gives you a 1-year manufacturer warranty with their product.
An installation-free water filter, Our first choice would be AquaTru countertop reverse osmosis water filter. It’s an NSF 58 certified BPA-free water filter that provides Zero TDS Water. It means it can remove Total Dissolved Solids from your water along with other hundreds plus contaminants. Aquatru uses 3 filter cartridges to filter water in 4 stages.
Design & Build Quality: We like the modern design of this water filter. There are 2 water storage tanks stacked side by side. There are 3 cartridges that are hidden inside a compartment. AquaTru has an LCD installed in the compartment that shows real-time TDS reading and other important information. The total system weighs only 16 pounds and can be placed on top of any flat surface.
Water Filtration: The process is fairly simple. Of those 2 water tanks, one is to hold tap water and the other one is to hold RO water. Simply, fill the tap water tank with water. Place it on the machine and start it. AquaTru will push the water through the installed cartridges and store purified water in the RO tank.
Install a Home Water Filter & Get "Unlimited Safe Drinking Water" For Decades
Get Upto 55% Discount With a Lifetime Warranty & 6-Months Money Back Guarantee Free Shipping
SpringWell Water Filtration Systems: 100% American-Made & NSF Certified Water Filters and Water Softeners
Both the tanks are detachable. The tap water tank holds about 1 gallon of water and the clean water tank holds about ¾ gallons of water. Aquatru needs 12-15 minutes to completely fill the tank with RO water.
Cartridge Replacement: 3 different cartridges have been used in the system that has different lifespans. The Pre carbon cartridge can last for 6 months, the RO cartridge for 2 years, and the VOC cartridge for 1 year. The cartridges are widely available, and their replacement process is also very simple.
2) Waterdrop Countertop Reverse Osmosis Water Filtration System, TDS Reduction, Filter Life Reminder, Automatic Flushing, 3:1 Pure to Drain, 4-Stage Water Filter: Best Reverse Osmosis Without Tank
- WaterDrop WD-N1-W is an extremely compact yet powerful Smart Reverse Osmosis water filter.
- It has a Digital touch display, Sleep mode, Standby Mode, automatic flushing, and an instant wake-up feature.
- Along with RO technology, uses a UV filtration system to kill bacteria.
- It is NSF-58 Certified & purifies water in a total of 4 stages.
- Its water supplying capacity is about 100 gallons per day, 1 gallon in 10-12 minutes.
- It has a super impressive 3 liter filtered water: 1-liter Waste Water drain ratio, making it the most water-efficient RO water treatment system.
- The system houses only 2 Filter Cartridges, A Coconut shell Carbon Filter, and a reverse osmosis membrane filter
- The cartridge needs to be changed every 6-9 months
- a 30-day money-back guarantee and a 1-year manufacturer’s warranty.
Design and Build Quality: The ingenious build quality and eye-catchy design of this filter made us say WOW.
Waterdrop countertop model WD-N1-W is the most compact and stylish water filter on our list. It is designed to merge well with smart homes and offices. And its compact size makes it possible to fit in tiny places, even on your bedside table.
It comes with automatic flushing technology and a smart touch Display. The touch can show multiple readings like filter life indicator, water volume settings, water shortage indicator, TDS level, auto flush indicator, etc.
SpringWell Reverse Osmosis Drinking System: America's No.1 Water Solution For Homes
Water Filtration: There’s only one water tank that has been used in this water filter. When you fill it with tap water and push the start button, the filter dispenses water through the spout directly to your glass.
Thus, it prevents any kind of chance of secondary contamination. The filtration process is also very quick. It fills a standard glass (250 ml) with pure quality water in a minute.
Cartridges and Replacements: Waterdrop WD-N1-W uses 2 cartridges to purify water in a total of 4 stages. The first one is a Carbon Filter that can last for 6 months. The other one is a Reverse Osmosis Membrane filter that can last for 18 months.
3) KFLOW Countertop Reverse Osmosis System, 4-Stage Water Filter System, Double RO Reverse Osmosis Water Filtration System with Filter Life, TDS Monitor, 0.0001 Micron Precise Filtration
- KFLOW 0.0001 micron Reverse Osmosis water filter is NSF 58 certified.
- KFLOW water Filter has an LED display, filter life monitor, and a TDS indicator.
- It purifies water in 4 stages.
- Its water supplying capacity is about 100 gallons per day, 1 gallon in 10-12 minutes.
- It has an industry-standard 1 liter filtered water: 2-liter Waste Water drain ratio.
- The system houses 4 Filter Cartridges, A PPF Filter, A Carbon Block Filter, and A Double Stage R.O Filter.
- The cartridges need to be changed only once a year
- KFLOW gives you a 1-year manufacturer’s warranty with their product.
The next countertop water filter we recommend for you KFLOW countertop reverse osmosis water filter. This one is also NSF certified and uses a total of 4 cartridges to purify tap water. Unlike AquaTru, it filters water based on your demand. Meaning you can select the volume of water you need at a certain time. Including the Water volume selection mode, made this water filter more efficient and economical.
Design & Build Quality: KFLOW water filter comes in a beautiful white color. It’s the newest model from the company. The water filter has rugged construction for maximum durability.
At the front, there’s an LCD that lets you select water volume and shows the Total Dissolved solids level in your water. It also shows the lifespan of the cartridges and reminds you when it is time to change them.
We appreciate that KFLOW included a carafe to hold purified water instead of a tank. This way, you don’t need to use a second water jug. You can simply detach the carafe from the water filter and solace on the dinner table. By the way, the carafe can hold 1700ml / 7 glasses of water.
Water filtration Process: Its Water filtration process is just like any other RO water filter. You fill the storage tank with tap water, select the amount of water you need, and press start. Instantly, purified water will come out of the system and be stored in the carafe.
It takes about 7-8 minutes to completely fill the carafe with RO water.
Cartridges Replacement: As mentioned before, the KFLOW water filter has 4 cartridges in total. A PPF Filter, A Carbon Block Filter, and A Double Stage R.O Filter. They need to be replaced every 6-9 months.
4) AlcaPure Reverse Osmosis Countertop Water Filter by RKIN with Patented High Capacity 4 Stage Technology: Purified Alkaline Water with Superior Taste
- Simplistically designed Alcapure countertop RO water filter provides fresh Alkaline and great tasting water.
- It is NSF-58 Certified & purifies water in 4 stages.
- Its water supplying capacity is about 100 gallons per day, 1 gallon in 15 minutes.
- It has an industry-standard 1-liter filtered water: 2-liter Waste Water drain ratio.
- The system houses 4 Cartridges: A Sediment Filter, A Carbon Block Filter, A R.O Filter, and A Alcapure Post Filter
- The cartridges need to be changed every 6-9 months
- Alcapure gives you a 1-year money-back guarantee and a 1-year manufacturer’s warranty with their product.
Alcapure is a unique countertop reverse osmosis water filter because it can provide alkaline water. Along with the RO Membrane filter, it also houses a post-carbon filter that helps it balance the pH level of your drinking water. If you are a fan of alkaline water and looking for an installation-free RO water filter, then Alcapure is the best option for you.
Design & Build Quality: Alcapure has a simplistic design, so there’s nothing much to say about it. It is made of durable plastic. Like the others, it has 2 water tanks. The pure water tank is fixed with the system. The tap water tank is detachable and holds about a gallon of water.
On the downside, Alcapure does not have a TDS display or automatic flushing feature. It does not show real-time TDS reading, show life indicators, or anything. There is only a round button at the front that starts and stops the water filtration process.
Water Filtration Process: Alcapure collects tap water from the tank, runs it through the cartridges, and stores it in the pure water tank. The process continues until the pure water tank is completely full. There’s a spout at the front that pours water into your glass.
Their patented Alcapure Post Filter adds back some beneficial minerals to the RO water. Making the water alkaline and tasty to drink.
Alcapure can give you 75 gallons of alkaline water a day, 1 gallon in 15-20 minutes.
Cartridges and their replacements: Alcapure uses 4 cartridges in total: A sediment Filter, A Granular Activated Carbon Filter, A R.O Filter, and a Post Activated Carbon Filter. Except for the R.O cartridge, they need to be replaced every 6-9 months.
5) Express Water EZRO5 Countertop Reverse Osmosis Water Filtration System, Simple Set Up Faucet Filter: Best Reverse Osmosis Without Electricity
- Express EZRO5 is the most affordable countertop RO water filter.
- It requires no electricity to produce RO water.
- It is NSF-58 Certified & purifies water in 4 stages.
- EZRO5’s water supplying capacity is about 100 Gallons Per Day, 1 Gallon in 15 Minutes.
- It has a not-so-good 1-liter filtered water: 3-liter Waste Water drain ratio.
- The system houses 4 Cartridges: A Sediment Filter, A Granular Activated Carbon Filter, A R.O Filter, and a Post Activated Carbon Filter.
- The cartridge needs to be changed every 6-9 months
- Express gives you a 1-year manufacturer’s warranty with their product.
Express EZRO5 is the most affordable countertop reverse osmosis water filter on our list. It’s a tankless system that is designed to be used only in the kitchen. EZRO5 does not require any kind of electricity to run. It is an NSF-certified countertop & installation-free RO water filter that comes with a faucet.
Design & Build Quality: Express didn’t really care about the looks when they designed EZRO5. Instead, they focused on functionally.
They have created a properly functioning system that may not be eye-pleasing but can get the job done.
On a metal plate, Express has stacked 4 filter cartridges on top of each other. All 4 cartridges are connected with plastic pipes. At the end of the 4th cartridge, you will find a chrome faucet connected to it. The entire system weighs only 11 pounds. So, you can hang it on a wall or place it on a flat surface.
There is no internal pressure pump, no TDS display, no on/off button.
Water Filtration Process: As you can see in the picture, EZRO5 comes with two 3-feet-long tubes and a standard bypass valve. The bypass valve screws onto any standard faucet. Remember, if you pull down, spay, or custom-designed dedicated faucet in your kitchen, the EZRO5’s bypass valve won’t fit with it.
When you turn on your faucet and the bypass valve, tap water gets redirected to the RO system through the tubes. After the water runs through all 4 cartridges, pure water comes out from the RO faucet.
And when you shut off the bypass valve, water comes out from the kitchen faucet as it should without any kind of purification. A super simple process, isn’t it?
Express EZRO5 provides 1 gallon of healthy drinking water in about 15 minutes.
Cartridges Replacement: There are 4 filter cartridges that have been used in Express EZRO5.A sediment Filter, A Granular Activated Carbon Filter, A R.O Filter, and a Post Activated Carbon Filter. The R.O filter has a lifespan of 1 year and the rest of the filter can last for 6 months.
Reverse Osmosis Without Faucet: Buying Guide
1) Reverse Osmosis Membrane Cartridge
There are several companies that make reverse osmosis water filters. Different companies use different combinations of cartridges in their systems.
But there’s a common cartridge that you fill in every reverse osmosis water filter which is the RO Membrane Cartridge. It is considered the heart of the machine. It’s a 0.0001-micron filter. The pore size of this filter is so clear that nothing but water can go through it. That’s why every known water contaminant can be removed with this filter.
Along with that, some water filters use sediment filters, carbon filters, Polypropylene filters, etc. Those filters assist the RO filter to purify the water. The use of multiple cartridges increases water filtration accuracy and the lifespan of RO Membrane filters.
The rule of thumb,
the more filter cartridges one water filter has, the more accurate it is at purifying water.
2) Water Filtration Speed
Water filtration speed depends on the power of the internal pump of a water filter. All reverse osmosis systems, except gravity-powered units, have one. It increases water pressure and forces water through cartridges to produce RO water.
Since countertop RO filters are compact, they have a somewhat small pressure pump. Most countertop water filters can produce 80-120 gallons per day. If you need more water, then you will have to get a tankless unit. A tankless unit can produce 400-600 gallons of water every
3) Pure water to drain water Ratio
Pure water to drain water Ratio refers to the efficiency of the water filter. For example: if a countertop RO system has a 1:2 drain ratio, it means out of 3 liters of tap water you will get 1 liter of pure water. The remaining 2 liters, referred to as wastewater, will have a high level of TDS which will not be suitable for drinking.
No reverse osmosis water filter can purify every bit of water you put into the system. Because it drastically reduces the lifespan of water filter cartridges. Making it ridiculously expensive to operate.
Although the wastewater is not fit for drinking, it can be used to water plants, wash cars & clothes, etc.
4) NSF certificate
National Sanitation Foundation tests and certifies water filters in the U.S.A. to protect average users from buying fake products. If the water filter you want to buy has an NSF certificate, it means it has passed the standard set by NSF. And, you can trust the advertisement claim of that particular water filter.
Power consumption: Since every countertop reverse osmosis water filter has an internal pressure pump and TDS display, they require electricity to run. On average, they need 30-40 watts of power to produce RO water.
Best Filter For Limescale In 2021
Remove Chromium 6 With best water filters in 2021
Our Review Of Reverse Osmosis Water Filter From WaterDrop, WaterdDrop G2 Reviews in 2021
Most Powerful Tankless Reverse Osmosis Water Filter, WaterDrop G3 Review In 2021
