No matter where you live or work, the water that you drink won’t be entirely pure and you’ll never know for sure what’s in your drinking water unless you have it tested in a lab. Who’s actually going to do this?
So to ensure that you have high-quality drinking water, a reverse osmosis (RO) water purification system is your safest bet. For those who simply want pure drinking water in their homes an under sink RO system is the best way to accomplish this. Though their other situations where pure water is needed and, for this, an under sink reverse osmosis system is not always the best. So this review is going to cover a variety of RO water purification systems: under sink; counter top and commercial reverse osmosis applications.
There’s a huge demand for RO systems that will provide safe, clean drinking water in our homes and this has made under sink reverse osmosis kits very popular. For most DIY guys, these systems are easy to install and maintain. They vary in price and efficacy and will generally use anything from 1 to 5 stages of purification. Though there are some RO systems that have a sixth stage which is really a remineralization process – adding essential minerals to soften the water by balancing the PH and, in some cases, adding minerals that are beneficial to our health. Some of the high-end RO systems have a seventh stage that use UV lights to ensure that there is absolutely no chance that any bacteria will be present in your drinking water.
The level of filtration and general quality will depend a lot on what you’re prepared to pay. Though you may end paying more than you need to unless you know what you’re getting. So this section of the review is going to help you choose the best under sink reverse osmosis system for your home.
1. Under Sink APEC ROES 50 5-Stage Reverse Osmosis Water Filter System
For a top quality, US made under sink RO system, the APEC ROES 50 comes at an incredibly reasonable price. You have the assurance that the tubing used is FDA food grade approved. Having been in the water purification business for over 20-years, the APEC brand is one that you can trust and depend upon. The reassurance of buying from an established brand means that you’ll always be able to get technical support, replacement parts,and top quality filters. The APEC ROES 50 has been certified by the Water Quality Association (WQA), so it’s been independently tested and verified.
The APEC ROES 50 is a very compact system, designed to fit under any sink – the tank measures 11 X 11 X 15 inches and the filtration system dimensions are: 16” X 5.2” X 17.5”. It’s easy to install and maintain, which is great news for homeowners who want to do it themselves. The push-in water fittings with stainless steel teeth are not only a breeze to install, but are also guaranteed never to leak. The faucet that’s supplied with the system is an elegant design, is lead-free, and of an exceptionally high quality standard.
When it comes down to it, we want really pure water from an RO purification system. In this regard, the APEC ROES 50 can compete with any of the best 5 stage reverse osmosis systems available today. The double carbon block filters, with larger than average surface areas, ensure that over 1000 different types of chemicals are removed from the water with a rated 99.99% of chlorine removal. I suppose there will always be that 0.01% that could slip through in any system. They claim a general “up to 99%” removal of all chemicals. Basically, the water is about as pure as you can get and as far as clean, healthy, palatable drinking water goes, it’s better than most of the bottled water that you would otherwise be buying in a store.
For a very affordable high-end under sink reverse osmosis water purifier, you’d have to search far and wide to find a better deal. You’ll always get the technical support that you need and this counts for a lot, as this RO system is going to be in your home for many years to come. APEC provide you with a 1-year limited warranty on this RO system.
2. iSpring RCC7 under Sink 5-Stage Reverse Osmosis Water Filtration System
The iSpring brand is another respected name in the industry and the iSpring RCC7 5 stage reverse osmosis is a hot competitor alongside the APEC ROES 50. This is also a WQA certified RO water purifier, earning the esteemed WQA gold seal. Both the iSpring RCC7 and the APEC ROES 50 have received a 4.8 star rating on Amazon from over 4000 customer reviews. I can tell you that this is a rare and remarkable achievement. They both cost roughly the same, so it’s not easy to choose between them. Though, I’m leaning toward the iSpring as the best in this price category.
The main reason why I prefer the iSpring RCC7 is the fact that it includes a water softener as the final stage – something that the APEC RO system doesn’t. I also like the humility of their advertising, most manufacturers would call this a 6 stage reverse osmosis water filtration system because of the PH balancing final stage. I also like the frankness with which the give the filtration spec. APEC claim a filtration of up to 99% removal of over 1000 chemicals. The phrases “up to” is ambiguous, it doesn’t tell you anything exact. Whereas iSpring provide the official WQA stat of 97.2% of all harmful contaminants. Whether this is better or worse than the APEC, no one can say because up to 99% can mean anything. The carbon filters on this RO system also remove over 1000 chemicals from the water with particle filtration of 0.001 microns.
The iSpring RCC7 is designed for easy DIY installation. The push-in pipe connectors seem to be of the same high standard as those used by APEC and the faucet is also of a high quality standard. It has a 3.2-gallon pressurized tank providing 75 gallons per day (GPD) and the dimensions are almost identical to the APEC: 14.5” X 5.2” X 17.5”.
I think that the iSpring RCC7 is probably the best value for money RO system around, though this is my opinion and others may not agree. The main reason why I say this is because it’s priced very reasonably for a high-quality 5 stage RO system but it can actually be classified as a 6 stage system. They offer a 1-year money back guarantee and 3-year limited warranty, which is way better than the industry norm. The iSpring RCC7 gets a big thumbs up from me.
3. Home Master TMAFC Artesian Full Contact 7 Stage Under Sink Reverse Osmosis Water Filter System
In some respects, the Home Master TMAFC could be the ultimate under sink RO system. Though if you’re going for the full package which includes a non-electric permeate pump, it’s going to become quite expensive. Then again, if you want the best of the best, you have to be prepared to pay for this.
The 7 stage reverse osmosis process used for the Home Master TMAFC is quite unique. Generally, remineralization is done as the sixth and final stage – as the water flows to the faucet. With this RO system, there are 2 remineralization stages, the first stage is before the water enters the tank and the seventh (final) stage is the standard (after tank) remineralization stage. The reason for this is to protect the rubber bladder inside the tank. One of the biggest reasons why an RO system needs to be replaced is because of tank degradation. By adjusting the PH before the water enters the tank, the harmful effects of acidic water on the tank components is averted. So the system should outlive even the best that many other brands have to offer.
Another great and innovative feature of this reverse osmosis system are the modular filters. Generally, an RO system has a filter housing and you replace the cartridges when they’re done. This can be ahassle and, over time, leaks can develop where the housing screws into the top casing. This can result in maintenance issues as the system ages. The Home Master TMAFC utilizes all-in-one filter cartridges that include the housing – the whole filter unit is disposable. Now you may think that this is going push up your costs, these filters have to be more expensive. But here’s the remarkable thing about these filters, they only need to be replaced after 2000 gallons. So it isn’t really that expensive and your maintenance time is reduced because you’ll hardly ever be replacing filters. These full contact remineralization filters are said to be far superior to standard filters and the catalytic carbon filters are probably the best at removing chloramines which is more stubborn than chlorine. Most RO filters are developed to effectively remove chlorine, however, chloramine is becoming the more widely used disinfectant and needs a higher level of carbon filtration.
If you go for the whole hog and pay extra for the complete RO kit which includes the non-electric permeate pump, you’ll have the added benefit of constant pressure – there’s no back pressure. In addition to this, there’s a massive water saving when it comes to the water loss through the waste water drainage. Without this pump, you’re looking at a water wastage ratio of 1:4, if you have the pump this becomes 1:1.
Naturally, this is a high-quality RO system. For the price, one would expect it to be. Like most of the best under sink reverse osmosis kits, it’s designed for easy DIY installation and it’s reasonably compact, despite the extra filtration that it provides, measuring 20 X 16 X 13 inches. It also delivers 75 GPD, which is more than the standard 50 for many other systems. It’s a US made product and carries an incredible 5-year warranty.For added peace of mind, their customer care is reputed to be excellent.
4. Olympia Water Systems OROS-50 5-Stage Reverse Osmosis Water Filter System
I’m never a fan of cheap stuff, I’m always of the opinion that it’s worth paying more for the best quality. So the Olympia OROS-50 wouldn’t be my first choice when looking for an under sink RO system. Though I have to be fair here, this is not junk. If you’re not up to paying the high prices that you would for the top end reverse osmosis systems, this is one of two that I’d recommend as the best budget RO system.
I would certainly say that this is a high-quality item for its price. Above the counter, which all you see, the faucet is great quality and ranks among the best. When you go below the counter, things are slightly different. The filter housings and tank seem to be really good quality, probably very close to the best higher priced options. My only concern would be with the quick connect push-in pipe connectors. While they’re just as easy to install as any other and are likely to remain leak-free for many years, they don’t quite meet my (rather OCD) expectations. I’ll justify this by saying most people wouldn’t be too concerned about this and if you’re paying a lower price, you couldn’t possibly expect all the components to be of the same standard as the more expensive units.
It’s a full 5stage reverse osmosis system, so you’re getting pure water with excellent removal of particles and chemicals, by means of a 0.001 micron RO membrane – as good as any of the best reverse osmosis filters. The 50 GPD capacity is fairly standard, only a few under sink RO systems provide 75 GPD or more and all of these are considerably more expensive than this one. All the tubing and the faucet are NSF certified.
It’s just as easy to install as any of the others and occupies a space of 16” X 7” X 20”, the tank measures 12” X 12” X 18”. The installation guide is also excellent with easy to follow photographs. Though many people have said it took some time to sort out the leaks. They did, however, all manage to stop the leaking. One thing that many have repeated is how helpful the technical support team have been with sorting out any issues. That gives me a lot of confidence and negates some of my grudges with regards to this being a cheap reverse osmosis system.
If you feel faint when looking at the prices of the high-end reverse osmosis kits available, the Olympia OROS-50 will certainly come as a breath of fresh air. It’s cheap, but nowhere near nasty. In fact, the quality vs price is exceptional and they have the backup support to rival any of the high-priced “best of the best” RO manufacturers.
5. Express Water RO5DX 5 Stage Under sink Reverse Osmosis Drinking Water Filtration System
The Express R05DX falls into the middle of the price range, similar to the first two in this review of the best under sink reverse osmosis systems. There’s some added value in this price, you get an extra set of replacement filter cartridges with your purchase. It’s a great 5 stage RO system and is also one of the better quality systems.
I really like the steel tank. Call me old-fashioned, but I always prefer steel to plastic. If you’re concerned about the tank rusting, don’t be. Like all RO tanks, the water is isolated in a bladder that’s made of a flexible rust-free material. In this case, the bladder is made from butyl which is tough and won’t rust. Basically, the water never comes into contact with the steel outer casing of the tank. The tank is NSF certified.
This is also a very easy RO system to install and comes complete with color-coded push-in quick connect fittings and easy to follow instructions. The chrome and brass faucet is also excellent and looks great too. Filtration is exactly what you’d expect from one of the best reverse osmosis systems and you’re assured of perfectly pure drinking water with up to 99.9% removal of all harmful contaminants.
This is another product that instills great confidence, manufactured by a US company with over 27-years of experience in the reverse osmosis business. I’d place the Express R05DX up there with any of the best RO systems in this price range. People have also raved about their after-sales service and you get the bonus of an extra set of filters.
6. Global Water RO-505 5-Stage Reverse Osmosis System
This is another package that offers excellent value for money. Not only is the Global Water RO-505 on the cheaper end of the price scale, but you also get an additional set of filter cartridges with your purchase. It’s a very competent 5 stage reverse osmosis system that will guarantee you clean, healthy, and odorless drinking water.
While the general quality of this product is great, I have the same issue with the push-in pipe connectors as I do with some of the other budget RO systems – they’re not the best but are still of a reasonable quality standard. In all other aspects of its performance and quality, it can be ranked amongst any of the best 5 stage reverse osmosis systems.
So you have the reassurance that over 1000 harmful contaminants are removed from your drinking water with up 99% efficiency. The faucet is a really cool looking item and is top quality. It also has a steel tank which appeals to my no plastic fetish. Both the tank and faucet are NSF/ANSI 58 certified, guaranteeing your health and safety.
The complete installation kit is, like most others in this class, exceptionally easy to install and maintain. They also have a 24-hour technical helpline for US customers. It’s as compact as any of the best under sink RO systems, with dimensions of 14 X 5 X 16 inches.
The Global Water RO 505 offers an amazing combination of affordability and excellent quality. It’s as effective as anyone could want a 5 stage RO system to be and the quality standard is close to that of the more expensive systems. This all adds up to exceptional value for money.
7. Costway Top Tier 5-Stage Ultra Safe Reverse Osmosis Drinking Water Filter System Purifier
As the cheapest in this list of the best under sink RO filtration systems, the Costway will certainly give the Olympia OROS-50 a run for its money. This product compares very well to the other cheaper option in this review, both in terms of quality and performance.
It has a very quiet 24W booster pump, which is nice to see on a reverse osmosis system in this price range. A pump is of particular value if your inlet water pressure isn’t that great. The components and faucet are of a really good quality standard with the exception of the push-in connectors which are, as to be expected in this price range, not the best.
Another issue that many users have had is that the instructions aren’t that clear. Unlike the others, that have diagrams and photographs to make things easier, this one has very basic instructions. It just as easy to install as any of the best under sink RO systems, this is just not explained very well. So, if you’re not too technically minded, you might need some help with the installation.
The bottom line with any reverse osmosis system is the purity of your drinking water and to this end, the Costway does a great job. When all is said and done, this is a very effective 5 stage RO water purification system at a fantastic price. They don’t provide any stats for the filtration, but I can’t see why these shouldn’t compare to any of the others. It seems like all the better 5 stage RO manufacturers have very similar claims in this regard – over 1000 harmful contaminants removed with up to 99% efficacy. Some of the really high-end systems boast up to 99.99%, but in this price range, one can expect the usual up to 99%. The carbon and RO membrane filters look like all the others and it should meet the general standards.
8. Brondell H2O+ Circle Water Saving Reverse Osmosis Water Filter System
By far the best looking of all the under sink reverse osmosis systems, the Brondell Circle is going to impress many discerning homeowners. The entire system is contained in an elegant casing, there are no filters hanging in the kitchen cabinet and it occupies way less space than any other under sink RO unit. It costs more than many others but, being one of the most efficient RO systems on the market, it will end up saving you quite a bit due to the lower water loss.
The most striking advantage of this system is its small footprint, it occupies a total area of 13.8 X 9.2 X 16.5 inches, and this includes all the filters and the tank in one contained unit. You don’t see any filter housings and pipes running under your sink and this also means there’s no chance of bumping or snagging any of the components which could damage the system.
Without using a pump, Brondell has eliminated back pressure by use of a smart valve. This has dramatically improved the efficiency of this RO system without the need for any electrical connections or the noise of a pump. There’s virtually no water wastage. This valve has also dramatically improved the refill rate of the tank. I think this has helped them reduce the size of the tank, making the whole unit smaller. In the end, you have a really good flow rate and reduced space, an excellent and innovative design.
I’m surprised to see that this is a 4 stage system, despite being one of the more expensive under counter reverse osmosis systems. I may be wrong, but I think this might have something to do with the tank design that doesn’t require the fifth after-tank filtration stage. It’s received the WQA Gold Seal which is reserved for the best water purification systems, so it must be up there with the best of them when it comes to the purest drinking water. It also meets NSF/ANSI 42, 53, 58 and 372 standards. As far as independent verification goes, the Brondell Circle certainly ticks all the boxes.
It’s an all-around stylish unit with a remarkably elegant designer faucet. This is arguably, the most efficient RO system around and it has automatic RO filter flushing which increases the life of the filters. There are LED indicators that tell you when the filters need changing which is a handy extra feature
I think many would fall in love with this RO system based on its looks alone. The design has the added advantage of freeing up a lot of cabinet space under your sink. Technically, it’s brilliant with really innovative design features that make it exceptionally efficient.
If you’re renting a house or apartment, an under sink reverse osmosis system is probably out of the question. These RO units require that you drill into the counter and install a separate faucet, you also need to make modifications to the existing plumbing. Most rental lease agreements prohibit these types of modifications. What about when you go on vacation? If you’re going to rent a vacation home or own an RV, it would be beneficial to have a portable RO system that you can take with you and is quick to install and remove.
For all these situations, a counter top reverse osmosis system provides the answer. You’ll install a counter top RO unit in minutes. They have an adapter that connects to any standard faucet with a valve that you turn to redirect the water to the RO system. These are compact units that fit neatly onto any counter top and occupy minimal space. So a counter top RO system is a very practical way to have pure drinking water wherever you go. It’s quick, simple and practical.
However, there are some limitations to using a counter top reverse osmosis system. For one thing, most don’t have a storage tank and you have to switch over the water supply manually. It’s a very simple procedure to turn the valve and direct the water to the RO filters, but you have to collect and store the water when you do this. This means storing your purified drinking water in bottles and jugs. You also can’t turn on the faucet to rinse your fruit and vegetables over the sink, like you can with a permanently installed RO faucet. Some will have a storage tank with a built-in tap at the tank. Though these will obviously occupy more space and can be quite expensive.
When it comes to your routine maintenance, there’s a slight drawback in that the pre-filters used in counter top RO systems are usually smaller. This means replacing these filters more regularly.
9. APEC Portable Countertop Tankless Reverse Osmosis Water Filter System
We’ve come to expect the best quality and performance from the APEC brand. They’re a US company and have been around for over two decades. For a high-end product, the APEC portable counter top reverse osmosis system is not at all expensive. There’s no storage tank to push up the price, so you’re getting a top of line 4 stage reverse osmosis purification without any extras.
It’s a very inconspicuous and neat looking aluminum unit, occupying a surface area of 12 X 14 inches and stands 14-inches tall. At a weight of only 10-pounds, it’s a versatile, portable item. It fits onto an existing standard faucet in a matter of minutes and you’re ready to go. Though you should check first if it will work with the faucet that you want to use. Some designer faucets won’t accommodate the adapter and it also won’t work with spray or pull-out faucets.
It will operate fine when supplied with a water pressure of between 40 and 80 PSI to provide a very impressive 90 gallons per day of perfectly pure drinking water. Because there’s no tank, you’ll need to fill your water container at the RO unit, though this isn’t a complicated process.
For an easy to install high-end counter top reverse osmosis system, I rate this one very highly and so do just all about all of those who have bought one. Having the technical support and backing of the APEC brand is another good reason to consider this counter top reverse osmosis system.
10. AquaTru Countertop Water Purification System with Exclusive 4 – Stage Ultra Reverse Osmosis Technology
The AquaTru countertop reverse osmosis unit is more versatile than most as it has a water storage tank, so you always have pure drinking water on tap. This, to my mind, is its biggest advantage.
Despite having water storage, this RO unit doesn’t take up much counter space, a really pleasant surprise. The entire thing is 14” tall, with a width of 12” and its 14” deep. It has a clean crisp design which is thoroughly modern and ergonomic. There’s a digital display that tells what’s going on with the RO filtration system.
The water storage tank fills up to about two-thirds of its capacity and then waits until it’s nearly empty before refilling, this means that the water doesn’t stand too long and I suppose it won’t collect any unwanted elements during this time. It takes about 12-15 minutes to purify a gallon of water when refilling. The 4 stage RO filtration is excellent, here are some of the official stats for the removal of harmful contaminants: chlorine – 96.6%; lead – 99.1%; chromium – 97.2%; fluoride – 93.5% and copper – 95.2%. This is pretty good but not quite the up to 99% that some others claim, though I’m more inclined to accept stats given like this than when they make the claim of “up to”. They provide a full chart of all the filtration capacity specs of this RO system on their website and on Amazon.
I like the inverted filter housing setup, it seems much easier to change the filters. Most RO systems have filter housings that hang, whereas these stand on a base. As is to be expected from a counter top reverse osmosis system, there’s virtually no installation and anyone should be able to set it up in a matter of minutes.
The AquaTru counter top RO system is a good looking compact unit that gives you pure drinking water instantly. There’s no need to fill bottles and jugs to store your drinking water. I have some concerns about plastic storage, given all the hype about BPA and BPS contamination from plastic. However, I’ve been reassured that the plastic used for this RO system’s water storage is Tritan and is deemed to be food safe, so this should alleviate any fears that you may have about this.
11. Revolution Countertop Tankless Portable Universal 5-stage Reverse Osmosis RO Purification Water System
Despite being one of the few 5 stage counter top RO systems, the Revolution is incredibly cheap. So how can a more advanced counter top reverse osmosis system be so much cheaper? It just takes one look at the unit to see why. It has no housing or any aesthetic features, it’s a very utilitarian looking device. You’re paying for the filters, a diverter valve,and tubing – that’s it. If you don’t mind that fact this system is downright ugly, it’s going to save you a lot of money and give you the best and purest drinking water that you can get.
The addition of a fifth deionization stage makes this RO system more advanced than any of the other counter top reverse osmosis systems. The fact that it’s just a bunch of filters connected together without any fancy enclosure makes it the most compact (7” X 14” X 7”). This makes it quite easy to conceal, which kind of makes up for the severe lack of aesthetic appeal – you can easily hide it behind a kitchen appliance. The filtration system is excellent and delivers 75 gallons per day. The stats seem to be very much in line with most RO filtration systems with some specs going as low as 85% and others as high as 99%. So the general claim of up to 99% can apply to this RO system.
If you’re not wanting to spend too much on a reverse osmosis system, this one is an absolute winner. They have in no way cut costs by using inferior components. From a technical standpoint, this is one of the best. Instead, they’ve saved by not providing anything but the basic working components. This makes a lot of sense to me. I wouldn’t mind building a simple wooden enclosure for the unit, considering how little I’d be paying for one of the best counter top reverse osmosis systems available today. This is the kind of bargain that I like.
Compact RO systems are great for the home, but if you’re using larger volumes of purified water, their limitations may be too great. Places like, restaurants, laboratories, hydroponic farms, and salons will require larger volumes of pure water per day than domestic RO systems can provide.
Commercial reverse osmosis systems use RO membranes that are rated for up to 5000 GPD, compared to domestic systems that range from 50 – 150 GPD. So this means that a commercial RO system can produce more purified water in a day and it will be of a similar high quality standard as the drinking water that the home RO systems provide. Generally, commercial RO systems are 3 stage, so they may not be quite as effective as household systems at removing all the impurities.
The filter housings and cartridges are larger to handle the extra volume. Those that use tanks will also have a larger storage capacity than domestic RO systems. So a commercial reverse osmosis system will obviously occupy more space. Where a tank is not used, the filters will be an in-line installation, meaning that the main water supply is connected to an inlet at the filters and an outlet pipe is led to wherever the water is needed.
12. Hydro Logic 31023 1000 GPD Evolution RO1000 High Flow RO system
The best part about the Hydro Logic 31023 is its price. For a quality commercial reverse osmosis system with a reasonable flow capacity, this unit is very affordable. You’re supplied with the basics and not much more, which is what brings the price down.
The three extra-large filter housings are grouped in a triangular shape and this makes the unit very compact. Though the space-saving position of these filters makes it a little more complicated to loosen the housing when changing the cartridges. This may not be a problem for most people, perhaps only if you have fairly large hands and they provide a plastic filter wrench to assist in making this easier. It has simple connections for the water inlet, outlet and drain pipe, with the inclusion of a pressure gauge which is nice.
The flow rate is really good at a 1000 gallons per day. It also has a really good efficiency with a waste water ratio of 2:1. Filtration is about average for a 3 stage reverse osmosis system of this size, a 95% reduction in the parts per million of dissolved solids.
For its price, the Hydro Logic offers a really good volume of RO purified water and is very a capable unit. Its compact design can also be a big advantage if you have limited space.
13. iSpring RCB3P 300 GPD Commercial Grade Reverse Osmosis Water Filter System
At an even lower price than the Hydro Logic 31023, the iSpring RCB3P is a serious contender for the best budget commercial reverse osmosis water purifier. That is if you’re not going to me using too much water – this system is limited when it comes to GPD specs.
What first impressed me is the level of quality that the iSpring RCB3P offers, especially when you look at its price. The filters are perfectly arranged in a steel frame with solid standing feet. This is in strong contrast to the basic plastic filter mounts used on the Hydro Logic RO system. The filters and connection points are easy to access and it has a pressure gauge. If you’re using a pressurized tank this system is fully compatible, though a tank is not supplied with the unit.
Where this model falls short of its budget rival is in the lower flow rate of only 300 gallons per day. On the other hand, it has the advantage of a booster pump which increases the water pressure to optimize the osmosis filtration process and give you a steady supply of purified water. The really large 20” filters require less frequent changing, so you’ll get around 3000 gallons from a cartridge.
If your requirement for RO purified water falls within the 300 GPD that this system provides, it’s a fantastic system at an incredible price. It’s robust and offers exceptional quality, making it fantastic value for money.
14. LiquaGen – Reverse Osmosis + Deionization (RO/DI) – 800 GPD Commercial Grade Water Filtration System
The LiquaGen commercial reverse osmosis system stands out from the crowd in that utilizes a nuclear grade deionization unit that produces analytical quality water, making it one of the best reverse osmosis systems for laboratory use. The superior water quality is matched by serious commercial-grade design and build as well as a large pressurized tank.
This RO system is capable of producing up to 800 gallons of RO purified water per day, which is enough for most commercial applications. With above average filtration and a 99% contaminant removal capacity, it’s quite impressive. It’s also highly efficient with a 1:1 waste water ratio. A digital display keeps you on top of the system functions. The entire unit is contained in a robust steel frame and every component speaks to its purposeful industrial-grade design and build.
The tank holds an impressive 40-gallons and cheaper options are available if you don’t need as much storage. This is one of the best commercial reverse osmosis systems for its size and price. A really great piece of equipment.
15. Apex MR-C Series Commercial 2000 GPD Reverse Osmosis System for Drinking Water & Hydroponic Applications
Having looked at some of the best commercial reverse osmosis systems, it’s time step things up a notch. The Apex MR-C series could be viewed as the ultimate high-volume commercial RO system. The price certainly seems to indicate that it’s a cut above the rest – it’s not cheap.
The first reason why this RO system is more expensive than the other commercial units in this review is the size of the system. It delivers a truly impressive 2000 gallons per day and, if you’re prepared to pay even more, they have an even larger 3000 and a huge 4000 GPD model. This makes these commercial RO systems ideal for high-volume water industries like hydroponics.
It’s contained in a really tough powder coated frame with all the gauges and meters that you need to know what’s going on with the system. This includes the inlet, outlet and filter pressure. The pressure is provided by a high-quality brass rotary vein pump. Along with the large 20” filters, every part of this RO system seems to be the best quality that one can find. So while it may a high-priced item, this is certainly one of the best commercial RO systems around.