Top 21: Best Reverse Osmosis Water Filter For Sale Online

Reverse osmosis is a filtration method that removes harmful compounds found in water to make it potable.  It uses pressure and a semi permeable membrane to purify water of impurities and foreign contaminants.

The RO filter has become very popular since its introduction to the market because more and more people are becoming aware of its benefits.

Though R.O. shower filter systems may be unnecessary in most cases, having a good supply of reverse osmosis drinking water would be healthy for pretty much anyone.

JUST IN CASE: If you're looking for shower head water filters you can check out our awesome shower water filter list RIGHT HERE.

Now, you might be asking yourself:

“Where can I buy reverse osmosis water?”

RO water can be bought commercially but if you’re planning on consuming it on a regular basis, it may be a little pricey to buy R.O. water by the bottle all the time. So, the best option is to buy an independent system... thankfully, we've done all the work for you and have come up with all the osmosis water filter options you'll ever need!

Enough beating around the bush! Here's a list of the 21 Best Reverse Osmosis Filters For Sale Online.

SPOILER ALERT... Here are our FAVORITE PICKS:

OUR FAVORITE PICK
APEC Top Tier 5-Stage Ultra Safe Reverse Osmosis Drinking Water Filter System (ESSENCE ROES-50)
iSpring RCC7 High Capacity Under Sink 5-Stage Reverse Osmosis Drinking Water Filtration System and Ultimate Water Softener- WQA Gold Seal Certified
iSpring RCC7AK High Capacity Under Sink 6-Stage Reverse Osmosis Drinking Water Filtration System with Alkaline Remineralization - WQA Gold Seal Certified (NSF/ANSI 58)
APEC Top Tier Supreme Certified High Flow 90 GPD Ultra Safe Reverse Osmosis Drinking Water Filter System (ULTIMATE RO-90)
Home Master TMAFC Artesian Full Contact Undersink Reverse Osmosis Water Filter System
$199.00
$185.39
$208.60
$299.95
$280.49
3,477 Reviews
1 Reviews
1,270 Reviews
967 Reviews
731 Reviews
OUR FAVORITE PICK
APEC Top Tier 5-Stage Ultra Safe Reverse Osmosis Drinking Water Filter System (ESSENCE ROES-50)
$199.00
3,477 Reviews
iSpring RCC7 High Capacity Under Sink 5-Stage Reverse Osmosis Drinking Water Filtration System and Ultimate Water Softener- WQA Gold Seal Certified
$185.39
1 Reviews
iSpring RCC7AK High Capacity Under Sink 6-Stage Reverse Osmosis Drinking Water Filtration System with Alkaline Remineralization - WQA Gold Seal Certified (NSF/ANSI 58)
$208.60
1,270 Reviews
APEC Top Tier Supreme Certified High Flow 90 GPD Ultra Safe Reverse Osmosis Drinking Water Filter System (ULTIMATE RO-90)
$299.95
967 Reviews
Home Master TMAFC Artesian Full Contact Undersink Reverse Osmosis Water Filter System
$280.49
731 Reviews

Last update on 2018-06-21 at 19:55 Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.

Jump To A Section!

1. 5-Stage Residential System (50GPD)

5 STAGE 50GPD Residential REVERSE OSMOSIS SYSTEM - RO WATER FILTER 50 GPD

This reverse osmosis water filtration system uses 5 stages to ensure that you are getting clean and safe water. The system comes with an NSF-certified 50 GPD (gallons per day) membrane and an NSF-certified steel storage tank so you know you are getting the best system for your home. Everything you need comes with the package but installation may take a while because there are plenty of parts to work with. It also features an auto shut-off valve so you don’t have to worry about forgetting about shutting the system down when not in use.

2. 4-Stage Mikro Alpha Portable (RO) System with 75 GPD Membrane


Abundant Flow Water PRO-Alpha 4 Stage Mikro Alpha Portable Reverse Osmosis Water Filter System with 75 GPD Membrane

If you’re looking for a portable system that you can use indoors and outdoors, go for the 4 Stage Mikro Alpha Portable Reverse Osmosis (RO) Water Filter System. This system filters your water through 4 stages and provides up to 98% of contaminate removal. It's ideal for smaller spaces like condos, apartments and even RVs and it has a garden hose adapter that allows for easy usage and storage. It comes with a 75 GPD membrane that is capable of producing 2 to 3 gallons per hour.

3. 50 Gallon Per Day 5-Stage Home Drinking System

50 Gallon Per Day 5-Stage Reverse Osmosis RO Under the Counter Drinking Water System

A high quality, easy-to-install and efficient reverse osmosis water filtration system – that’s what the AMI 5-Stage Home Drinking Water System is. This system comes pre-assembled so make sure you have ample space in the area where you want to install it!

4. Express 5-Stage Home Drinking System (100GPD) - with Modern Chrome Faucet PLUS Set of 4 Extra Filters

Express Water Reverse Osmosis Water Filtration System – 5 Stage RO Water Purifier with Faucet and Tank – Under Sink Water Filter – plus 4 Replacement Filters – 100 GPD

For those who take their reverse osmosis systems seriously, this is the one for you. This 5-stage reverse osmosis water filter system boasts of a 100 GPD membrane that ensures you of superior performance and results. With a modern chrome faucet and 4 extra filters thrown in, the system features an auto shut-off valve so you don’t waste a single drop of water.

5. iSpring RCW5 - 5-Stage Under-Counter System with Quick Fitting (50GPD)

iSpring RCW5 - Legendary 50GPD 5-Stage Under-Counter Reverse Osmosis RO Water Filter with Quick Fitting

This brand name mentioned in many reviews and that is because their systems are one of the best in the market. The iSpring reverse osmosis water filtration system RCW5 model, in particular, is fully automated and filters water using 5 stages and it comes with a 50 GPD membrane. All units are wet tested before shipping and they come with a chrome faucet as well, though you may have to purchase different fittings depending on your existing plumbing.

6. No-Mess Drinking System

EcoPure Premium 4-Stage Reverse Osmosis Drinking Water Filter System (ECOP30) | NSF Certified to Remove Harmful Contaminants

The No-Mess Reverse Osmosis Drinking Water Filtration System is a sleek and compact system that removes lead, cysts, chlorine taste and odor and other water contaminants. The kit comes with a filter change reminder light so you know when it’s time to change the filters. With quarter turn encapsulated filters, changing is quick and easy. The only downside to this system is that it does require batteries (included in the kit, lasts up to 4380 hours).

7. Apex 50 5-Stage System

APEX MR-5050 5 Stage Reverse Osmosis Drinking Water System - Made in U.S.A.

This reverse osmosis water system comes with a 50 GPD membrane and is composed of high quality NSF and FDA approved components. It comes fully assembled so all you need to do is install it. The colored tubing feature makes installation a breeze. All units are wet tested and sanitized.

8. Hydro-Logic 31035 100-GPD Stealth-RO100


Hydro-Logic 31035 100-GPD Stealth-RO100 Reverse Osmosis Filter

It may be small but the Hydro-Logic 31035 100-GPD Stealth-RO100 Reverse Osmosis Filter does the job of bulkier water filter systems. This RO filter can remove up to 98% of chemicals and contaminants in your water to give you clean, pure low PPM water that easily compares to commercial bottled water. One common observation about this filter, though, is that it produces a little slower than the regular system.

9. Express Water 8-Stage Alkaline Antioxidant Home Drinking System

Express Water Alkaline Reverse Osmosis Water Filtration System – 10 Stage RO Mineralizing Purifier – Mineral, pH +, Antioxidant – Under Sink Water Filter with Remineralization – 50 GDP

With 8 stages of filtration to go through, you just know your water will be as pure as it can get once it reaches your glass when you use the Express Water 8 Stage Alkaline Antioxidant Reverse Osmosis Home Drinking Water Filtration System. The system features an auto shut-off valve for efficiency and it also comes with a premium brushed nickel deluxe faucet in the kit. Unlike most Express systems, however, this kit does not come with extra filters.

10. Under-sink System 5-stage - with Designed Faucet

Under-sink Reverse Osmosis Water Filtration System 5-stage with Designed Faucet - Carbon Block Taste & Odor Filtration - 50 GPD Membrane- Safety Water Pressure Gauge- Quick and Easy Self Installation Instructions

This system is easy to install and can conveniently fit right under your sink. It features an innovative design that uses the carbon block taste and odor filtration method along with a 5-stage water filtration system to give you pure, potable and high quality water at home. It comes with a LEAD-free faucet for guaranteed compatibility and has a 50 GPD membrane and a safety water pressure gauge that helps regulate water flow.

11. iSpring RCC7 - 5-Stage System (75GPD) - with Brushed Nickel Faucet and New Upgrades 2014


iSpring RCC7 High Capacity Under Sink 5-Stage Reverse Osmosis Drinking Water Filtration System and Ultimate Water Softener- WQA Gold Seal Certified

The iSpring RCC7 is one of the latest and the greatest RO systems you can get your hands on. The package comes with NSF / FDA certified components as well as a luxury designer EU-style faucet, water detector and a feed water adapter. Installation is easy and can be followed step-by-step from a YouTube how-to video. This system, however, can only operate with a minimum water pressure of 35 psi. Otherwise, you will need to use a booster pump to get the best results.

12. APEC - Premium 5-Stage Drinking System (Ultra Safe, Built in the USA)


APEC Top Tier 5-Stage Ultra Safe Reverse Osmosis Drinking Water Filter System (ESSENCE ROES-50)

This state of the art reverse osmosis water filtration system is a 100% built in the USA machine that removes up to 99% of the chemicals and contaminants in your tap and well water using the 5-stage filtration process and premium and long lasting filter to produce clean, crisp and pure drinking water that’s safe for the whole family. The APEC ROES-50 is made of high quality materials and operates noise-free for many years, eliminating the need to buy reverse osmosis filter systems every now and then in the long run. It is easy to install and even easier to maintain. All you need to do is replace the filters every 6 to 12 months to continuously enjoy great-tasting water.

13. APEC Water - Countertop Filter (Portable, Installation-Free, Built in the USA)

APEC Portable Countertop Reverse Osmosis Water Filter System, Installation-Free, fits most STANDARD FAUCET (RO-CTOP)

Clean and safe water on the go shouldn’t be so hard to get a hold of and if having great tasting potable water everywhere you go is what you want, you should definitely go for the APEC RO-CTOP RO water filter. The whole system is portable and does not require any installation so you are free to take it with you virtually anywhere. All you need to do is hook it up to a sink and you can enjoy bottled water quality drinking water in no time. This is ideal for those who are always on the move or those who are living in very small spaces. One downside, though, is that it produces water rather slowly so you’ll have to fill up jars when you have time to make sure you have clean water on the ready all the time.

14. APEC Water - High-Flow Drinking Filter System (90GPD)

APEC Top Tier Supreme Certified High Flow 90 GPD Ultra Safe Reverse Osmosis Drinking Water Filter System (ULTIMATE RO-90)

Another great offering from APEC Water brings the same quality as their previous models on this list but now with up to 90GPD. This model gives you more power for situations that may need to run on a bit more juice than average. Like the others, you can expect top tier quality and a super efficient design all built to perfection in the USA.

15. iSpring RCC7AK - 6-Stage System (75GPD) - with Alkaline PH+ Mineral Stage and Brushed Nickel Faucet

iSpring RCC7AK High Capacity Under Sink 6-Stage Reverse Osmosis Drinking Water Filtration System with Alkaline Remineralization - WQA Gold Seal Certified (NSF/ANSI 58)

If you’re looking for an system that you can truly consider as an investment, look no further than the iSpring RCC7AK. This is a cutting edge system that effectively and efficiently purifies your water using 6 stages. As with all the other iSpring systems, you can watch an installation walk through video for this system on YouTube to make it easier for you. It also boasts of a bigger membrane square footage that delivers fresh water quicker than the average system.

16. iSpring RCC7AK-UV - 7-Stage RO Filter (75GPD) -  with Flow Sensor Switch 11W UV, Alkaline PH+

iSpring RCC7AK-UV DELUXE Under Sink 7-Stage Reverse Osmosis Drinking Water Filtration System with Alkaline Remineralization and UV Sterilizer - WQA Gold Seal Certified

Another system worth the splurge is the iSpring RCC7AK-UV. It comes with the standard iSpring system features but this particular one uses a 7-stage process (including an alkaline stage) to assure you that you are getting only the purest, cleanest, freshest and best tasting water directly from your tap. It also has a booster pump feature for those in homes with less than 35psi water pressure. Aside from that, the RCC7AK-UV also boasts of a powerful 11w UV light feature flow sensor switch that powers on and off controlled by the drinking faucet.

17. Home Master TMAFC Artesian Full Contact Undersink System (White)

Home Master TMAFC Artesian Full Contact Undersink Reverse Osmosis Water Filter System

The innovative design of the Home Master TMAFC Artesian Full Contact Undersink Reverse Osmosis System solves most of the common problems one would encounter with standard and ordinary systems like leakage and slow water flow and production rate. It removes up to 98% of chemicals and contaminants in your water and adds minerals (calcium and magnesium) using the patented Full Contact technology for water that’s not only clean and safe but healthy as well. This system is truly worth every penny.

18. APEC Water - Permeate Pumped Reverse Osmosis System for Low Water Pressure Homes (Top Tier, High Efficiency, Built in the USA)

APEC Top Tier Supreme High Efficiency Permeate Pumped Ultra Safe Reverse Osmosis Drinking Water Filter System For Low Pressure Homes (ULTIMATE RO-PERM)

If a top-notch RO system is what you’re looking for, you should check out the APEC Water Ultra Safe & High-Efficiency Permeate Pumped Reverse Osmosis Filter System for Low Water Pressure Homes (RO-PERM). This state-of-the-art system uses a 5-stage RO filtration process that removes up to 99% of chemicals and contaminants in your water and features a patented permeate pump technology that increases delivery pressure at the faucet and allows for faster water flow and production. It is also equipped super capacity filters that last twice as long as the standard filters and comes with a LEAD-free chrome faucet and JG food-grade tubing.

19. iSpring Commercial Reverse Osmosis Filter (300GPD!!!) - with 20" FILTERS and Booster Pump

iSpring RCB3P 300 GPD Commercial Grade Reverse Osmosis Water Filter System w/Booster Pump and Oversized Pre RO Filters

It may be pricier than the standard RO system you can find online but the iSpring RCB3P-NT is well worth it in the end. This RO system features a free-standing frame and a built in pressure gauge along with 20” prefilters and 3 100GPD membranes, allowing it to produce a maximum of 300 gallons per day which is great if you plan on using it for commercial purposes. Just hook it up to a tank (sold separately) and you can enjoy clean and pure water.

20. Aquaphor DWM-101 Compact RO Reverse Osmosis Filter System (Built-In Airless Storage Tank and Mineralization)

Aquaphor Water Filters RO-101 Reverse Osmosis Water Filtration System 7 Stage Non Electric Compact Under Sink Ro No Booster Pump Needed Patented Water Airless Tank Remineralization Cartridge

· Clean and safe water starts with a good water filtration system and that is exactly what the Aquaphor DWM-101 Compact RO Reverse Osmosis System with Built In Airless Storage Tank and Mineralization is. This RO system is NSF approved, BPA-free and LGA certified so you are assured that you are getting the best quality and the best bang for your buck as well. Physically, it’s only half the size of your standard RO system unit but performance-wise, it is just as good, if not far better than the standard RO. It operates efficiently at low pressure and saves 50% of wasted water.

21. Home Master HydroPerfection Undersink RO System

Home Master TMHP HydroPerfection Undersink Reverse Osmosis Water Filter System

The Home Master HydroPerfection Undersink RO System is a great choice if you are looking for an RO system that can filter tap water as well as well water and city water. It uses an advanced filtration and purification stage that removes up to 99% of chemicals and contaminants in water and has long lasting and easy to change filters that are easy to maintain and replace.

Conclusion

Getting yourself a reverse osmosis filtration system doesn't have to be a difficult choice to make.​ The build-quality and overall competition available in the market assures great quality spanning across different brands and designs. All of the entries on this list have been curated to only reflect the highest rated products available online. So, don't you worry about ordering and receiving only the best quality. All-About-Water-Filters.com has done the research in advance and is here to extend a helping reverse osmosis hand!

In the end, a great hydration solution for your family should be top priority for any household, especially if you are in warmer climates or are situated in a far flung area of the world. You never know what you may be drinking so it’s always better to be prepared for the worst. A treatment system like any of the above will certainly do the job! it’s right to be concerned, as drinking something bad can easily create problems for anyone’s digestive system. You don’t want to find yourself or any member of your family hospitalized for something that could’ve been easily avoided.

We hope you have enjoyed this list and have found it helpful for your quest for the best option for sale online. Your search may not be over but at least you have a better idea of what’s available on the market these days, and we hope that’s helpful for you. Good Luck and Happy Filtering!

You Might Also Like