Water is life and one cannot imagine a life without it. This is the reason we all give utmost priority to ensure we get
clean water to drink. But with increasing pollution, the quality of water is not the same in all the locations, particularly in metropolitan cities where the water is full of contaminants that create huge adverse impact on our health. If the contaminated water is purified and consumed with pollutants, it can cause such deadly diseases that one can’t even imagine. Therefore, if the quality of water is low, it must be purified properly with the help of proper filtering mechanisms, and water purification systems are one of the best known options. Today, there are various types of water filters that are available in the market but one of the best in the lot is the reverse osmosis water system. Reverse Osmosis Filtration is an effective water purifying system that can kill and remove up to 99% of contaminants present in the water. It also removes various types of chemicals present in the water that couldn’t be normally filtered by other water filters. And this is the main reason, these reverse osmosis water systems are more popular than any other system available in the market today. With so many features and types, there are many types of reverse osmosis systems available and hence it is difficult to pick the right one. Let us look at some of the best ones in the lot and understand what is it that makes them the top players in their domain. We have also written a complete guide about the best water purifiers.
Key features to consider when choosing the best reverse osmosis water system
If you have ever taste the water that is purified by a reverse osmosis water system, you would know how refreshing
and pure it tastes and smells. Reverse Osmosis (RO) filtration is perhaps one of the best and most popular water filtration methods available and provides outstanding quality of water for your family and friends. Here are some of the features you can consider while buying a RO:
The Design
Reverse Osmosis filtration technology has evolved a lot in the recent years to give you safe and refreshing drinking water. If the filtration system is well designed and properly operated, it offers troublesome performance for long periods of time. Especially the membrane used in these filtration systems are designed for long useful life, hence while picking the one for your house, you must take into consideration this feature. On the other hand, if there are design flaws in the system, the operation of reverse purification system can lead to problems and reduces the membrane life, which is one of the most important part of these systems. Check out our complete guide about the best whole house water filters.
Material
Reverse Osmosis Water filtration systems use semi-permeable membrane to filter out molecules, ions and larger particles from the impure water, making it fit for drinking purposes. In the system, an applied pressure is utilized to overcome the osmotic pressure that is driven by chemical differences of the solvent. The result is that solute remains intact on the pressurized side of the membrane and pure solvent passes on to the other side. That’s why it is important that the membrane should be such that it doesn’t allow the ions and molecules to pass through it but at the same time, it should let the smaller particles (that’s the solvent molecules) to pass through it.
Filtration Stages
Reverse Osmosis system includes various stages through which the contaminated water is cleaned stage by stage,
giving you highly purified water as a result. Most of the contaminants that lead to diseases are filtered out in a stage that makes water pass through the semi-permeable membrane, however, there are additional stages that make sure other different types of contaminants are also filtered out. While some of the ROs have 3-stage structure, there are models that come with 5 stages and 7 stages also. As the name suggests, the difference lies in the number of stages these systems use to filter out the pollutants. For instance, the 3-stage RO comprises of a pre-filter stage, the reverse osmosis membrane stage and the post filter stage. Similarly, the 5 stage reverse osmosis drinking water system comes with – Polypropylene sediment filter stage, carbon water filter, 1 Micron Polypropylene water filter, osmotic membrane stage and carbon water post filter stage.
The most basic systems are designed with only two stages – the first stage, known as the pre-filtration stage, that uses a carbon block to filter out certain contaminants and the second stage that filters out the tiny particles that passed out from the first stage.
But normally the tap water doesn’t have high pressure and hence the rate of flow of water into the system is slow. If the water remains in the storage tank for long, it develops a taste and to solve this problem, more stages are introduced to get high quality drinking water.
The third stage is the post filtration stage that comes with second carbon filter to remove the unwanted taste of water. The fourth is usually an augmentation of third stage, where a sediment is placed before the carbon filter to filter out debris and dirt. The first stage is not an actual filtration stage but it reintroduces some of the minerals that the membrane had filtered out in the filtration stages. The sixth, seventh and eighth are just the advanced improvement stages that aim to remove whatever contaminants had escaped in the initial filtration stages of the purification system.
Pros and cons of Reverse Osmosis Water System
Pros:
- The reverse osmosis water purification systems remove all kinds of impurities in water, including pesticides, nitrates, bacteria, arsenic, sulfates and much more
- RO filtration system improves the taste of water by removing contaminants that create taste and odor issues
- These systems come with minimal moving parts that make the device easy to clean and maintain
Cons:
- Some of the basic RO systems remove necessary minerals from the water as part of purification process
- Some of the models do not have proper pressure pumps that can retrieve only 10-15% of the water and rest is drained out along with impurities
Top 15 Best Reverse Osmosis Water Systems in 2022
1. iSpring RCC7 High Capacity 5-Stage Reverse Osmosis Drinking Water Filtration System
When looking for an effective water filtering system, look no further than the iSpring RCC7 High Capacity 5-Stage
Reverse Osmosis Drinking Water System. This economical, 5-stage, Reverse Osmosis-based filtration systems and ultimate water softener effectively removes all the contaminants from your drinking water, leaving you with clean, pure, refreshing water. Backed by Gold Seal certification and industry leading customer service, iSpring RCC7 is a great performing, durable system that will give you many years of trouble-free, low maintenance RO system.
Theseare some of the features that separates it from various other brands.
The Design
Designed for easy, DIY installation, iSpring RCC7 5-Stage Reverse Osmosis Filtration System fits nicely under a standard kitchen sink. Its push-to-connect fittings and color coordinated tubing make the entire installation process quite simple. The installation is quite easy and the package comes with all the parts need for installation. You can follow the clear, well organized instructions, instructional videos and access to iSpring’s unparalleled technical support. The system is well-designed in a way that it is quiet and requires low maintenance with no moving parts. Replacement filters are of standard size and sold at factory direct pricing.
Included in the system is a lead-free, solid brass faucet with brushed nickel finish, which is usually mounted on the counter as the primary source of drinking water. You can connect the output lines directly to the ice maker or any other machine.
Material
The system comprises of premium quality components, which are Gold certified (highest ranking) by the Water Quality Association (WQA) against NSF/ANSI standard 58.This ensures high reliability, durability and low maintenance for several years of usage. iSpring RCC7 features beautiful European-designed brushed nickel, all-metal faucet and a clear see-through first stage housing. Apart from all this, the system is backed by 3-year warranty with lifetime support line.
Filtration Stages
The RCC7 is a multi-layered RO system that offers optimal protection against several types of contaminants, including bacteria, virus, lead, arsenic, chlorine, asbestos, hormones, fluoride, mercury, sodium, and more. It comprises of 5 different stages, each designed to effectively remove contaminants to improve water quality:
There are three pre-filters: Polypropylene (PP) sediment filter, Granular activated charcoal (GAC) filter and Carbon block (CTO) filter, to remove large particles and protect the carbon membrane from harmful chemicals. The state-of-the art Reverse Osmosis (RO) filter removes contaminants down to as precise as 0.0001 microns. The GAC final filter provides final polishing before the purified water is delivered to the faucet. What you get in the end is high quality fresh water with no chemicals and no hardness. The high-throughput membrane of this RO system is rated for up to 75 gallons per day (GPD), ensuring there is enough clean drinking water for families of all sizes.
Pros and Cons
Pros:
- Finest micron layered protection, allowing the CTO filter to function at its best
- Leak-free system and video production to provide ease of installation to customers
- Offers an easy way to visually inspect the sediment filter with transparent housing
- Gives great tasting, pure water
Cons
- The system comes with a design flaw that leads to water leakage
2. Home Master TMHP HydroPerfection Undersink Reverse Osmosis Water Filter System
Another impressive model by Home Master, this HydroPerfection Undersink Reverse Osmosis Water Filter system is
a massive 9-stage filter that can impress anyone with its exceptional water filtering capability. It adds additional minerals to the filtered water that makes it taste great. The device is capable of removing up to 98% of iron and other contaminants, sterilizing 99.99% of microogranisms. It comes with a permeate pump that reduces the water wastes by up to 80%.
The Design
The great innovative design of Home Master TMHP HydroPerfection RO eliminates the most commonly found issues in other traditional RO systems, which includes high water wastage, canister filter housing leaks, service challenges, slow flow rate, and slightly acidic water. Its superior performance makes it one of the best Reverse Osmosis systems available in the market today, backed by a five-year limited warranty.
The high quality filters of TMHP use a sectional ‘all-in-one’ design in which the filter is incorporated into the filter housing and the entire filter is disposable. This design makesthe filter changes fast and competent, diminishes microorganism and biofilm build up,and helps to get rid of the unwanted leaks. In addition to all this, its filters last longer than various other Reverse Osmosis filters; all it needs is a filter change once a year or every 2,000 gallons.
Material
The superior iron pre-filter used in the Home Master HydroPerfection contains an advanced redox media KDF85 that acts as a catalyst to remove dissolved iron from the water. Apart from this, the mixed media pre-filter utilizes the power of catalytic carbon filtration to remove chemicals like chloramines chlorine along with various other herbicides and pesticides.
Ordinary carbon filters are not capable enough to effectively remove the stubborn contaminant but Home Master HydroPerfection uses the advanced ultraviolet light sterilization chamber that helps safely destroys 99.99% of germs, viruses, bacteria, and other microorganisms, resulting in pure, great tasting water.
Filtration Stages
Known for its unique 9 stages, the HydroPerfection RO uses these stages of filtration, purification, sterilization and enhancement to give you exceptionally fresh and clean water. It uses catalytic carbon, sediment, iron and reverse osmosis purification to remove up to 98% of chlorine, hydrogen sulfide, iron, chloramines, metals, pharmaceuticals, dissolved solids and other harmful contaminates from the water.
Pros and Cons
Pros:
- Perfect innovative design that solves the most common problems found in traditional RO systems
- Advanced filtration and purification stages remove 98% of the contaminants
- Comes with long lasting and easy-to-change filters
- The patent full contact technology used by the RO adds calcium and magnesium to the water during the purification process
- Faster flow rate and better water efficiency
- Gives great tasting, pure water
Cons
- Poor installation instructions
3. APEC Top Tier 5-Stage Ultra Safe Reverse Osmosis Drinking Water Filter System
Now you can enjoy unlimited, great tasting water right at the leisure of your home with one of the best quality APEC
Top Tier 5-Stage Ultra Safe RO. It not only saves you money and time, but also frees you from the hassle of buying costly, bottled water. The ROES-50 reverse osmosis system delivers high quality filtered drinking water at an affordable price. APEC RO is designed to remove up to 99% of all contaminants, such as chlorine, toxic fluoride, arsenic, lead, chromium using its efficient filtration system. It guarantees its users trouble-free, high quality drinking water for years.
The Design
The filtration system comes with 100% lead-free faucet and FDA Certified JG food grade tubing and parts to provide fresh, contamination-free pure water. Its unique large carbon block surface maximizes contact time to ensure purity of water and enhanced lifetime of filters and membranes. The high-quality leak-free quick connect fittings do not rely on water leak detector to purify the water like various other brands.
There are no additional clipping parts and leak detector needed.
Material
The APEC ROES-50 Reverse Osmosis water filtration system is made from high caliber components to provide reliable, long lasting performance and exceptional rejection rate. It is engineered, designed and assembled in the USA, using the finest components selected from all over the world. The material used is trouble free and clog free, and the fittings are leak-free. These high quality fittings are made out of stainless steel material with special o-ring that ensures leak-proof seal.
Filtration Stages
The ROES-50 Reverse Osmosis water filtration system is a 5-stage water filter system that is made from high caliber components to provide reliable, long lasting performance and exceptional rejection rate
1st Stage: The high quality and capacity sediment filter removes dust particles and rust. The pure polypropylene depth filter that comes with exceptional dirt-holding capacity ensures longer life and fewer change-outs than existing string-wound or resin-bonded filters.
2nd and 3rd Stage: The carbon block filters comprise of activated carbon particles that are fused into a uniform block to offer enhanced adsorptive capacity and efficiency. Unlike the Granular Activated Carbon (GAC) filters, these extruded carbon block cartridges do not channel or bypass due to the uniformity of their extruded activated carbon core. This premium extruded carbon block eliminates the unpleasant chlorine, color, odor and taste. In these stages, VOCs and other common chemicals are also removed from the water.
4th Stage: The TFC RO membrane removes up to 99% of Total Dissolved Solids (TDS) and contaminants such as lead, chromium, arsenic, fluoride, radium, bacteria, viruses etc.
5th Stage: In this advanced stage, coconut shell refining carbon filter (TCR – Total Contamination Removal) eliminates any possible residual taste from the tank.
Pros and Cons
Pros:
- Double carbon block filtration system
- Offers trouble-free, noise-free filtration system for long lasting, pure drinking water
- True Leak-free fittings system
- Easy installation and maintenance
- Gives great tasting, pure water
Cons
- The faucet present is of low quality
4. Home Master TMAFC-ERP Artesian Full Contact Undersink Reverse Osmosis Water Filter System
The Home Master TMAFC Artesian Full Contact with Permeate Pump Undersink Reverse Osmosis System believes
in delivering solutions and not problems. It is capable of impressing anyone with its exceptional water filtration mechanism. It also adds beneficial minerals to the drinking water that produce great tasking water. The inbuilt non-electric permeate pump eliminates water wastage, while increasing the production. The innovative design of Home Master TMAFC-ERP eliminates the most common problems like high water waste, canister filter housing leaks, service challenges, slow flow rateand slightly acidic water. And all this is backed by a five-year limited warranty.
The Design
The most commonly seen problem with RO systems is the canister filter housing design, which leads to changing only the filters and not the filter housings. This leads to accumulation of biofilm, microorganisms and sediments in the canisters,which leads to leakage and ultimate failure of canisters with time. This can result in serious water damage and costly home repairs.
But worry no worry as the innovative filters of Home Master Undersink RO uses a modular ‘all-in-one’ design where the filter is incorporated into the filter housing and the entire filter is disposable. This reduces microorganism and biofilm build up, eliminating the leaks. Not only this, the high-quality filters of TMAFC system last longer than traditional RO systems filters and requires only a filter change once a year or every 2,000 gallons.
Material
The All Home Master Artesian RO systems use powerful catalytic carbon filtration media in the carbon pre-filters to get rid of the persistent chemical disinfectant chloramine. As most of the traditional carbon filters are unable to effectively remove this stubborn contaminant, these are now being replaced by chlorine. Artesian RO uses advanced carbon media known as catalytic carbon.
Filtration Stages
The TMAFC Home Master RO filtration system comes with a massive 7 stage filtration mechanism that produces most refined and refreshing drinking water. The impure water is made to pass through a sediment filter, a carbon filter, reverse osmosis membrane and remineralization filter and its Full Contact technology ensures the water passes through the final stages twice, including the remineralization filter stage that adds healthy minerals to the drinking water. This gives the filters an opportunity to eliminate all kinds of harmful contaminants from the water.
Pros and Cons
Pros:
- Additional permeate pump reduces the water waste and improves the recovery time
- Leak-free system and video production to provide ease of installation to customers
- Patented Full Contact technology adds magnesium and calcium to the drinking water twice during the purification process
- Gives great tasting, pure water that keeps you satiated
Cons
- Changing the filter could be tricky
5. iSpring RCC1UP-AK 7-Stage Reverse Osmosis Drinking Water Filtration System
When looking for an effectivewater filtering system, look no further than the iSpring RCC1 UP-AK7-Stage Reverse
Osmosis Drinking Water System. It is a maximum performance upgrade, equipped with a pre-installed booster pump that boosts the water pressure up to the optimal level for RO process. This way each aspect of reverse osmosis process is optimized from production speed to drain ratio.
The Design6.
Designed for easy, DIY installation, iSpring RCC1UP-AK 7-Stage Reverse Osmosis Filtration System fits nicely under a standard kitchen sink. It comprises of long-lasting multilayer membrane that is rated for up to 100 gallons per day, ensuring there is enough pure drinking water for families for all sizes. The top notch UV water sterilizer presents absolute protection against microorganisms and the high quality alkaline filter adds healthy minerals back to the drinking water.
Material
The system comprises of premium quality components, which are Gold certified (highest ranking) by the Water Quality Association (WQA).This ensures high reliability, durability and low maintenance for several years of usage. The thin composite semipermeable membrane, which is superior than the standard 75 GPD membranes on a standard residential RO system, filters down impurities up to as precise as 0.0001 micron.
In addition to all this, the system comprises of a lead-free solid brass body faucet with a brushed nickel finish. The faucet is well-mounted on the counter as the main output source for the RO water, but you can connect the output lines to the refrigerator output or coffee maker.
Filtration Stages
The RCC1UP-AK is a multi-layered RO system that offers optimal protection against several types of contaminants, including bacteria, virus, lead, arsenic, chlorine, asbestos, hormones, fluoride, mercury, sodium, and more. It comprises of 7 different stages, each designed to effectively remove contaminants to improve water quality:
The stage 6 performs the tasks of alkaline remineralization which remineralizes and also neutralizes the pH. This filter contains half red mineral stone and half calcite, ensuring the output is bottled-quality mineral water.
The 7th stage comprises of an ultraviolet sterilizer that is capable of filtering water from a well or directly from a natural body of water. The UV filter kills viruses, bacteria and other contaminants by interfering with the DNA and RNA in the organism’s reproductive cycles.
Pros and Cons
Pros:
- Finest micron layered protection, allowing the CTO filter to function at its best
- Leak-free system and video production to provide ease of installation to customers
- Offers reinforced transparent first stage housing to visually inspect the sediment filter
- Gives great tasting, pure water
Cons
- The system comes with a design flaw that leads to water leakage
6. Brondell RO Circle Water Saving Reverse Osmosis Water Filter System
If you are sick of your RO consistently operating at lower efficiency, wasting gallons of water each time it produces
filter water for you, look no more as Brondell RO Circle Water RO Filter System is now here to solve all these issues. It utilizes patented new technology to eliminate the issue of back-pressure, making it around 10 times more efficient than other traditional RO systems. Apart from all this, the Brondell Circle RO Water Filter gets rid of any need for electricity by integrating the tank and filters. This RO is an all-in-one, easy-to-install system which is WQA Gold Seal Certified.
The Design
The Brondell Circle RO Water Filter’s high-class Smart Valve and unique circular reservoir design are the keys to its brilliant design. The underlying technology it uses eliminates back-pressure on the RO membrane filter, making the RO Water Filter a leader in the marketplace. It can reduce wastewater to an average of 2.1 gallons for every gallon of drinking water, which means it is up to 10 times more efficient than various other traditional RO systems currently being sold. In addition to all this, the Brondell Circle RO Water Filter’s refill rate is more than twice as fast as non-electric systems; it is in fact as fast as those with electric pumps.
Installation and maintenance has also been simplified with features such as twist-and-seal filter changes, auto-flushing and “quick-connect” connections. Its small footprint leaves plenty of space under the counter, making it easy to install and maintain.
The Brondell + Circle RO Water Filter delivers power savings, space savings and water savings – all in an elegant, beautiful, simplified design.
Overall, the Circle RO Water Filter is an elegant, efficient reverse osmosis system for the modern, sustainable home.
Material
The system comprises of premium quality components, which are Gold certified (highest ranking) by the Water Quality Association (WQA) against NSF/ANSI standard 42, 53, 58 and 372.This ensures high reliability, durability and low maintenance for several years of usage. The device comes with designer chrome faucet with integrated LED indicator for filter change.
Filtration Stages
The Circle Reverse Osmosis Water Filtration System makes use of four separate advanced water filters, dramatically reducing pesticides, microorganisms, industrial chemicals, heavy metals, pesticides, herbicides, total dissolved solids (TDS), bad tastes and odors. This ensures the filters work together to achieve maximum efficiency.
Pros and Cons
Pros:
- Smart technology is up to 10 times more efficient than other traditional RO systems
- Auto RO filtering automatically flushes out the membrane, extending the life of filter
- Rapid refill rate
- Smart valve eliminates back pressure, making the system more efficient
- Gives great tasting, pure water
Cons
- Replacement filters are expensive
7. Global Water RO-505 5-Stage Reverse Osmosis System Water Quality Filter
Global Water provides high performance RO filtration system for quality, clean, fresh, great-tasting pure water at a
reasonable and affordable price. The RO-505 Reverse Osmosis system reduces the quantity of dissolved solids in water, and using the membrane it eliminates up to 99% of contaminants such as lead, arsenic, chlorine, bacteria, fluoride, etc. Global Water takes pride to offer its users this high quality filter system that comes with quick-connect fittings with self-secure technology, ensuring there are no clips needed for safety lock.
The Design
Designed for easy, DIY installation, Global Water RO-505 5-Stage Reverse Osmosis Filtration System fits nicely under a standard kitchen sink. Its push-to-connect fittings and color coordinated tubing make the entire installation process quite simple. The installation is quite easy and the package comes with all the parts need for installation. The system is well-designed in a way that it is quiet and requires low maintenance with no moving parts. Included in the system is a lead-free, high quality faucet.
Material
The system comprises of premium quality components, which are Gold certified (highest ranking) by the Water Quality Association (WQA) against NSF/ANSI standard 58.This ensures high reliability, durability and low maintenance for several years of usage. The set includes high quality lead free faucet and tank that adhere to the standards.
Filtration Stages
The Global Water Reverse Osmosis filtration system offers optimal protection against several types of contaminants, including bacteria, virus, lead, arsenic, chlorine, asbestos, hormones, fluoride, mercury, sodium, and more. It comprises of 5 different stages, each designed to effectively remove contaminants to improve water quality:
1st Stage: It comprises of Polypropylene 5-micron Sediment filter that removes the particles, dust, mud sand and more.
2nd Stage: In this stage, GAC coconut shell activated carbon 10 inch filter removes the chlorine, organics, odor smell, turbidity, colors and other VOCs chemicals.
3rd Stage: Cloudiness, bad smell, chlorine and bad taste is removed by CTO 5-micron coconut shell block carbon filter.
4th Stage: This stage comprises of a high quality TFC RO membrane that is capable of removing up to 99% of contaminants including heavy metal, lead, salt, bad minerals, arsenic, chlorine, and other dissolved chemicals.
5th Stage: Inline filter cartridge present in this stage removes all possible rough tastes and odors.
Pros and Cons
Pros:
- Finest micron layered protection, filtering 1000+ pollutants from the drinking water
- High quality quite connect fittings for easy and secured installation
- Certified inline premium quality filter to provide great tasting, pure water
Cons
- The system comes with a design flaw that leads to water leakage
8. APEC Top Tier Alkaline Mineral pH+ 75 GPDDrinking Water Filter System
The APEC Top Tier ROES-PH75 is a 6-stage 75 GPD reverse osmosis filtration system that offers its users unlimited
great tasting healthy water for drinking and cooking. It adds calcium minerals to enhance the taste of water and effectively raise pH for those who desire alkaline water. Not that this is the only RO that re-mineralizes the water; there are other re-mineralization reverse osmosis systems also that claim to add various beneficial minerals back into the water, however, their mineral formulations are often from unknown and uncertified sources that can lead to potential health concern.
With the ROES-PH75 RO system, you can easily save money and time, and live healthier with ultra-safe pure mineral water. Engineered, designed and assembled in the USA, this 6-stage RO water filtration system is made from high quality components that deliver exceptional contaminant rejection rates and long-lasting, reliable performance. Backed with 20 years of experience in reverse osmosis systems design and production, this filtration system provides high-quality safe drinking water for many years to come.
The Design
Designed for easy, DIY installation, ROES-PH75 RO is engineered, assembled and designed in the USA, using the best quality components selected from all over the world. The super efficient double carbon blocks are capable of removing up to 99.99% chlorine from drinking water, guaranteeing purity of water and multiplied lifetime of membrane and filters.
Material
APEC Top Tier system comes with 100% lead-free designer faucet and FDA Certified JG Food grade tubing. The parts are high quality to ensure safe, contamination-free pure drinking water. The exclusive leak-free quick connect fittings do not require any additional lock clips to seal leak, and does not even rely on water leak detector. Apart from all this, the system is backed by 3-year warranty with lifetime support line.
Filtration Stages
APEC Top Tier 75 GPD RO system comes with 6-stage filtration mechanism to remove up to 99% of microorganisms, viruses, bacteria, cysts, organics, chemicals etc.
1st Stage: This stage comprises of a high-capacity polypropylene sediment filter to remove dust particles and rust. It protects and extends the life of the membrane and filtration system.
2nd and 3rd Stage: In these stages, the premium extruded carbon block helps remove unpleasant odors, tastes, chlorine, cloudiness and colors. VOCs and other common chemicals are also removed from the water in these stages.
4th Stage: The High Rejection TFC Reverse Osmosis membrane removes up to 99% of total dissolved solids (TDS) and contaminants such as bacteria, lead, chromium, arsenic, fluoride, radium, viruses and more.
5th Stage: This this stage, the advanced coconut shell refining carbon filter (TCR – Total Contamination Removal) removes any possible residual taste from the tank.
6th Stage: PH+ alkaline re-mineralizing calcium filter in this stages adds calcium carbonate to increase water alkalinity.
Pros and Cons
Pros:
- Premium long lasting, high quality filters to provide unlimited pure drinking water
- Easy installation and maintenance
- Gives great tasting, pure water
Cons
- Takes up more space than a normal RO system
9. Olympia Water Systems OROS-50 5-Stage Reverse Osmosis
Olympia OROS-50 5-stage Reverse Osmosis water filtration system is designed and tested to provide clean, high-
quality drinking water. The filtration portion of the system measures just right for most under-sink cabinets. And the installation of the system is simplified by the step-by-step installation guide that comes with color images.
Talking about the quality, not only the parts of OROS-50 are NSF certified, but the entire system is tested and NSF certified.
The Design
Designed for easy, DIY installation, Olympia 5-Stage Reverse Osmosis Filtration System fits nicely under a standard kitchen sink. Its quick connect fittings and color coordinated tubing make the entire installation process quite simple.
Material
The system comprises of premium quality components that are NSF certified and tested against NSF/ANSI 42 for the reduction of bed odor, taste and smell and NSF/ANSI 58 for the elimination of total dissolved solids.
Filtration Stages
Olympia RO system offers optimal protection against several types of contaminants, including bacteria, virus, lead, arsenic, chlorine, asbestos, hormones, fluoride, mercury, sodium, and more. It comprises of 5 different stages, each designed to effectively remove contaminants to improve water quality:
Stage 1 comprises of 5 micron sediment filter, Stages 2 and 3 comprise of 5 micron carbon block filters, Stage 4 consists of RO membrane and a post-carbon filter makes the 5thstage 5. The high-throughput membrane of this RO system is rated for up to 50 gallons per day.
Pros and Cons
Pros:
- Finest micron layered protection, allowing the CTO filter to function at its best
- Easy to follow, DIY installation guide
- Designed to perfectly fit into the most types of under-sink cabinets
- Gives great tasting, pure water
Cons
- The system comes with a design flaw that leads to water leakage
10. Express Water 11-Stage UV + Alkaline + Reverse Osmosis Home Drinking Water Filter
Backed by 27 years of research and development, Express Water have designed this excellent 11-stage RO water filter
for optimum performance and exceptional efficiency. Every component is created after thorough water pressure testing to ensure durability and compatibility. Every system is created after thoroughly checking for leaks to ensure leak-free operation. Every filter housing is created after thoroughly testing cycle resistance to ensure long term use.
The Design
Designed for easy, DIY installation, Express Water 11-Stage UV + Alkaline Reverse Osmosis Filtration System fits nicely under a standard kitchen sink. Its quick connections are labelled and color coordinated with the help of caps to match where the hoses are to be inserted, making the entire installation process quite simple. All houses are label matched with the filter cartridges so that the replacement process is simple and easy.
All the included parts in the system are 100% lead free, made out of Solid BPA free materials to prevent contamination.
Material
The system comprises of premium quality components that are 100% lead free. The UV ultra violet sterilizer is capable of removing up to 99.99% of bacteria, viruses and other contaminants.
Filtration Stages
Express Water UV + Alkaline RO water filtration system comprises of 11 different stages, each designed to effectively remove contaminants to improve water quality:
1st Stage comprises of 5 Micron Sediment Filter that is melt blown with thermally bonded 100% pure Polypropylene microfibers. It can remove rust, dirt, sediments, silt, scale, coarse sand and sand from drinking water. Its great dirt holding capacity results in longer life and fewer filter changes.
2nd Stage has a G.A.C. Filter (Granular Activated Carbon filter) cartridge that is made of 100% Pure Coconut Shell Carbon and features a 5 um nominal micron rating. It can remove contaminants such as suspended particles, chlorine, dirt, organic chemicals, unnatural tastes and odors and other chemicals found in tap water.
3rd Stage comprises of a carbon block that is 100% Pure Coconut Shell Carbon in a “block” construction, featuring a 5 um nominal micron rating. It can remove contaminants such as suspended particles, chlorine, dirt, organic chemicals, unnatural tastes and odors and other chemicals found in tap water.
4th Stage has the Reverse Osmosis Membrane (100 GPD), which is a semi-permeable membrane capable of removing up to 99% of aesthetic and health-related contaminants. It helps eliminate viruses, bacteria, pesticides, Total Dissolved Solids, Ai, Pb, Cd, Hg and various other unhealthy contaminants.
5th Stage is the Alkaline Remineralization stage where the water is naturally mineralized and alkalinized pH+ upon passing through the mineral rocks. It helps keep your body’s pH level balanced and boosts energy and hydration levels with micro cluster technology. This stage removes harmful free radicals and causes fresher and clearer skin by increasing oxygen levels.
6th Stage comprises of the UV Ultraviolet Light which sterilizes and sanitizes the water to effectively eliminate up to 99.99% of cysts, viruses, micro-organisms and harmful bacteria like E. Coli, Fungi, Algae, etc. The water then flows through the reflective stainless steel housing chamber and makes contact with the UV lamp light evenly.
7th Stage is the Post Carbon Inline Quick Connect,also known as the Polishing Filter as it is the final stage of any standard reverse osmosis system. Made out of high quality coconut shell carbon, the inline filter stabilizes the water taste quality and eliminates bad tastes and odors.
Pros and Cons
Pros:
- Finest micron layered protection, allowing the CTO filter to function at its best
- UV sterilizer removes 99.99% of bacteria, viruses and other contaminants
- Clear transparent housing for easy filter inspection
- High capacity 100 GPD membrane that produces pure water at a faster pace
Cons
- Pressure gauge doesn’t give accurate reading
- The system is not NSF certified
11. Express Water 5-Stage Reverse Osmosis System – RO5DX
Supported by 27 years of thorough research and development, Express Water has created this RO filtration system
with a perfect design to maximize performance and optimize efficiency. They conduct various tests to adhere to the premium quality excellence. Each and every component is created after thorough high water pressure test to give reliability and durability under normal working pressure. Apart from all this, a leak stopper is included with every system.
The Design
Your time is valuable, and Express Water understand this well. RO5DXC has been specially created keeping this in mind as this design ensures you spend the least amount of time installing and maintaining your reverse osmosis system. TheQuick Connections are labeled and come with color coordinated caps to match where each hose must be inserted. All the housings are label matched with the filter cartridges to ensure a simple replacement process.
Material
The system comprises of premium quality components, backed by 1-year warranty with lifetime support line. The sediment filter is melt blown with pure polypropylene microfibres. The Granular Activated Carbon filter cartridge is 100% pure coconut shell carbon. The polishing filter is made from high quality coconut shell carbon. Additionally, all parts that come in contact with water are BPA and lead-free.
Filtration Stages
The RO5DXC is a 5-stage RO system that offers optimal protection against several types of contaminants, including bacteria, virus, lead, arsenic, chlorine, asbestos, hormones, fluoride, mercury, sodium, and more. It comprises of 5 different stages, each designed to effectively remove contaminants to improve water quality:
1st Stage comprises of a 5 Micron sediment filter that is melt blown with thermally bonded 100% pure Polypropylene microfibers. It is capable of removing scale, dirt, slit, rust, coarse sand and sediment from the drinking water. The dirt-holding capacity of the system results in longer life and fewer filter changes.
2nd Stage comes with a G.A.C. (Granular Activated Carbon) filter cartridge which is made of 100% Pure Coconut Shell Carbon and features a 5 um nominal micron rating. It can remove bad taste and odor, organic chemicals, chlorine, suspended particles, dirt and other chemicals found in tap water.
3rd Stage has the Carbon Block CTO that is also made of 100% Pure Coconut Shell Carbon in a “block” construction. It features a 5 um nominal micron rating and removes bad odor and taste, suspended particles, dirt, chlorine, organic chemicals, and other chemicals found in tap water.
4th Stage comprises of Reverse Osmosis Membrane (50 GPD), which is a semi-permeable Membrane element that removes up to 99% of aesthetic and health-related contaminants. Apart from this, it also removes viruses, pesticides, bacteria, Ai, Pb, Cd, Hg and Total Dissolved Solids.
5th Stage is the Post Carbon Inline Quick Connect, which is also known as the Polishing Filter because it is the final stage of any standard reverse osmosis system. It is made out of high quality coconut shell carbon, and the inline filter steadies the water taste and further removes any bad tastes and odors.
Pros and Cons
Pros:
- Finest micron layered protection, allowing the CTO filter to function at its best
- Quick and easy to understand installation
- Environment-friendly coconut carbon filters to provide quality natural taste
- Included is an emergency leak stop detector to shut off water flow
Cons
- Not very effective once the warranty runs out
12. Express Water 6-Stage Deionization + Reverse Osmosis Filtration System
We can never be sure about the quality of water that flows out of taps. Water that come from the municipal sources
might contain harmful addictives that can lead to serious health issues. Water that come from the well contain huge amount of contaminants. Hence, it is important to treat this water and this is where Express Water RODI10D comes into the picture. It is a perfect solution to the water problem that exists in old houses that comes with plumbing using lead pipes.
The Design
RODI10D is specially designed using special membranes and filters through which the pressurized running water is passed with the purpose to remove inorganic solids from the drinking water. The Express Water RODI10D is designed to remove lead, minerals, salts, and other particulates that cannot be seen with the naked eye. It provides healthy, pure drinking water.
Material
The system comprises of premium quality components that are 100% lead free. The UV ultra violet sterilizer is capable of removing up to 99.99% of bacteria, viruses and other contaminants.
Filtration Stages
Express Water RODI10D RO water filtration system comprises of 6 different stages, each designed to effectively remove contaminants to improve water quality:
1st Stage comprises of 5 Micron Sediment Filter that is melt blown with thermally bonded 100% pure Polypropylene microfibers. It can remove rust, dirt, sediments, silt, scale, coarse sand and sand from drinking water. Its great dirt holding capacity results in longer life and fewer filter changes.
2nd Stage has a G.A.C. Filter (Granular Activated Carbon filter) cartridge that is made of 100% Pure Coconut Shell Carbon and features a 5 um nominal micron rating. It can remove contaminants such as suspended particles, chlorine, dirt, organic chemicals, unnatural tastes and odors and other chemicals found in tap water.
3rd Stage comprises of a carbon block that is 100% Pure Coconut Shell Carbon in a “block” construction, featuring a 5 um nominal micron rating. It can remove contaminants such as suspended particles, chlorine, dirt, organic chemicals, unnatural tastes and odors and other chemicals found in tap water.
4th Stage has the Reverse Osmosis Membrane (100 GPD), which is a semi-permeable membrane capable of removing up to 99% of aesthetic and health-related contaminants. It helps eliminate viruses, bacteria, pesticides, Total Dissolved Solids, Ai, Pb, Cd, Hg and various other unhealthy contaminants.
5th Stage is the Deionization stage wherethe water filtration happens whereby total dissolved solids (TDS) are removed from water through ion exchange. Hence, by controlling the electric charge of ions in the water, TDS are remove. Just the way a positively charged magnet attracts a negatively charged magnet, DI resins attract non-water ions and replace them with water ions, leaving a more pure water form.
6th Stage is the Post Carbon Inline Quick Connect,also known as the Polishing Filter as it is the final stage of any standard reverse osmosis system. Made out of high quality coconut shell carbon, the inline filter stabilizes the water taste quality and eliminates bad tastes and odors.
Pros and Cons
Pros:
- Finest micron layered protection, allowing the CTO filter to function at its best
- Clear transparent housing for easy filter inspection
- High capacity 100 GPD membrane that produces pure water at a faster pace
Cons
- Pressure gauge doesn’t give accurate reading
- The system is not NSF certified
13. Costway 5-Stage Reverse Osmosis Water Filtration System
When looking for an effective water filtering system, adopt the Costway Top Tier 5-Stage Reverse Osmosis (RO)
membrane and generate water by the international advanced reverse osmosis technology. The unit is designed and assembled in the US to ensure you get safe water for drinking and cooking purposes. Using the mute booster pump gives the RO water filtration system prolonged lifespan and reliable quality. The unit comes with a replaceable pre-treatment filters that makes sure the water undergoes effective pre-treatment and convenient replacement at competitive price of filter replacement, providing overall low operating cost for pure water generation.
The Design
For civil tap water, the water purifier performs coarse filtration using the PP cotton filter. The granular active carbon filter absorbs all the unusual colors and odors. This RO absorbs residual chlorine with its block active carbon filter to generate filtered water.
The filtered water passes through a reverse osmosis membrane for filtration to generate drinking water which is in compliance with requirements in the sanitary standard for hygienic safety.The quality of generated water isevaluated on treatment devices of drinking water-reverse osmosis treatment devices. Included in the system is a lead-free, solid brass faucet with brushed nickel finish. You can connect the output lines directly to the ice maker or any other machine.
Material
The system comprises of premium quality components to ensures high reliability, durability and low maintenance for several years of usage. The material used is PP, UDF, RO, CTO and T33.
Filtration Stages
Costway Top Tier is a five-stage filtration system, which helps you get rid oforganic impurities, heavy metals, sand suspension, soluble solids, colloids, bacteria, virus and other harmful substances. It ensures it only reserves water molecules and soluble oxygen
Stage 1 comprises of a 10″ PP cotton filter that removes visible impurity(≥ 5um) such as microorganisms, rust, sediment, red worm and a variety of suspended particles. The recommended replacement time for this filter is every 3~6 months
Stage 2- This stage filters the water using a 10″ granular active carbon filter. It adsorbs and removes bad taste and odors present in the water. Apart from this, several organic contaminants such as chlorine and chemicals linked to cancer – pesticides, benzene, herbicides, insecticides, trihalomethanes and many volatile organic compounds are also filtered out. The recommend replacement time is every 6~12 months
Stage 3 comes with a 10″ Block active carbon filter that removes bad odor and taste, chlorine, and remnantimpurities. The recommend time period for replacement of this filter is every 6~12 months
Stage 4: This stage consists of a RO membrane filter to remove particles≥1um, viruses, heavy metals, most organic matter, and its salt removing rate is up to 90%. The recommend time for replacement is every 18~24months
Stage 5: In this stage the water is polished and refined to generate sweet tasting drinking water using a 10″ post active carbon filter. It is recommended that the filter should be replaced every 6~12 months
NOTE: The water in pressure tank should be discarded for the first three time use.
Pros and Cons
Pros:
- Finest micron layered protection, allowing the CTO filter to function at its best
- Automatic flushing to flush the RO membrane at start-up and restart up, prolonging its service life
- Effective pre-treatment and convenient replacement of filters
- Gives great tasting, pure water
Cons
- Installation process is not easy and instructions are not user friendly.
- The device is not NSF certified
14. Watts Premier RO-Pure 531411 4-Stage Reverse Osmosis Water Filtration System
If convenience and quality is what you are looking for, the Watts Premier RO-Pure 4-Stage Reverse Osmosis water
filtration system is the right pick for you. It protects your family against various types of impurities and contaminants that may be found in drinking water. The RO-Pure 4-stage filtration reduces dissolved solids found in water, including minerals, metals, salts as well as cysts, bacteria, and viruses. System comes with a variety of features and options.
The Design
Push button filter of Watts RO-Pure filtration system reduces space issues and provides easy access. Its built-in shutoff valves make filter replacement an easy task. The high-production membrane filters that come with the system reduces the contaminants down to 1/10,000 of a micron. The Watts Top Mount faucet coupled with electronic monitor allows you to know when to change the filters, and thehigh-volume RO storage tank allows continuous RO water flow for your family, eliminating the need of bottled drinking water.
Material
The system comprises of premium quality components, which are Gold certified (highest ranking) by the Water Quality Association (WQA) against NSF/ANSI standard 58.This ensures high reliability, durability and low maintenance for several years of usage.
Filtration Stages
Watts Premier RO system comprises of 4 different stages, each designed to effectively remove contaminants to improve water quality:
1st Stage comprises of 5 Micron Sediment Filter that removes rust, dirt, sediments, silt, scale, coarse sand and sand from drinking water. Its great dirt holding capacity results in longer life and fewer filter changes.
2nd Stage comprises of a 5 micron carbon block that can remove contaminants such as suspended particles, chlorine, dirt, organic chemicals, unnatural tastes and odors and other chemicals found in tap water. These are the pre-filters as they eliminate the impurities before the reverse osmosis membrane
3rd Stage is the main stage of the filtration system – the Reverse Osmosis Membrane, which is a50 gallon per day semipermeable membrane capable of removing up to 99% of aesthetic and health-related contaminants. It helps eliminate viruses, bacteria, pesticides, Total Dissolved Solids, Ai, Pb, Cd, Hg and various other unhealthy contaminants.
Stage 4: In this stage the water is polished and refined to generate sweet tasting drinking water using a 10″ post active carbon filter.
Pros and Cons
Pros:
- Uses quick change filters, eliminating the mess associated with filter replacements
- Ease of installation to customers
- Gives great tasting, pure water
Cons
- The system comes with a design flaw that leads to water leakage
- The membrane filter gets clogged
15. Geekpure 5-Stage Reverse Osmosis Drinking Water Filter System – 75GPD
Geekpure 5-Stage Reverse Osmosis Drinking Water System isan economical, 5-stage, Reverse Osmosis-based
filtration systems and ultimate water softener effectively removes all the contaminants from your drinking water, leaving you with clean, pure, refreshing water. The efficiency can be governed by its ratio of pure to waste water – 1: 2. Backed by streamlined DIY filter installation, this system fits well under most of the sink cabinets.
The Design
Designed for easy, DIY installation, Geekpure75GPD 5-Stage Reverse Osmosis Filtration System fits nicely under a standard kitchen sink. The installation is quite easy and the package comes with all the parts need for installation. The system is specially designed with NSF certificated thin-film composite RO membrane that is capable of filtering down to 0.0001 micron, reducing 99% contaminants, including mercury, heavy metal arsenic, bad taste and odor, bacteria, fluoride, asbestos, lead, cysts and more 1000+ contaminants
Included in the system is a lead-free, solid brass faucet with brushed nickel finish, which is usually mounted on the counter as the primary source of drinking water.You can connect the output lines directly to the ice maker or any other machine.
Material
All the fittings and tube, storage tanks and RO membrane are high quality, adhering to NSF/ANSI standard 58 to ensure you get safe, pure and healthy water. The kitchen sink faucet is NSF certified Lead free deluxe quality to make sure you get pure water all the time.
Filtration Stages
Geekpure RO is a multi-layered RO system that offers optimal protection against several types of contaminants, including bacteria, virus, lead, arsenic, chlorine, asbestos, hormones, fluoride, mercury, sodium, and more. It comprises of 5 different stages, each designed to effectively remove contaminants to improve water quality:
There are three pre-filters: Polypropylene (PP) spun filter, Granular activated charcoal (GAC) filter and Carbon block (CTO) filter, to remove large particles and protect the carbon membrane from harmful chemicals. The state-of-the art Reverse Osmosis (RO) filter removes contaminants down to as precise as 0.0001 microns. The GAC final filter provides final polishing before the purified water is delivered to the faucet. What you get in the end is high quality fresh water with no chemicals and no hardness. The high-throughput membrane of this RO system is rated for up to 75 gallons per day (GPD), ensuring there is enough clean drinking water for families of all sizes.
Pros and Cons
Pros:
- Finest micron layered protection, allowing the CTO filter to function at its best
- Provides ease of installation to customers
- High quality fittings, NSF certified
- Gives great tasting, pure water
Cons
- The system comes with a design flaw that leads to water leakage