The world is full of so many different types of water filters. You can get a basic water pitcher jug that simply filters out water contaminants with a carbon filter. This is enough to make water smell and taste good. However, if you want and need complete and total water filtration then you really can’t beat getting the best reverse osmosis system.

You don’t need to fork out a small fortune for a whole house reverse osmosis system. You can simply get an RO filter that attaches to your tap faucet. It will easily fit under your sink along with all the plumbing and that’s it. Just leave it to filter and it will remove all contaminants from your water.

Reverse osmosis is one of the easiest ways to get clean filtered water plumbing into your home. It is very efficient and doesn’t create too much waste and this is why RO is the filtration method of choice for industrial processes.

Let’s take a closer look at the best reverse osmosis water filter systems currently available on the market.

Why Is Reverse Osmosis Water Good For You?

Reverse osmosis is one of the most popular systems for filtering and purifying water. 

The reverse osmosis system is very efficiently able to remove and filter contaminants from water. It is able to radically improve both the quality and taste of your water. But it is also powerful enough to remove minerals from things like saltwater.

Aside from making sea water drinkable, it removes all manner of contaminants. For instance, a variety of contaminants like bacteria, herbicides, lead and other heavy metals.

These types of contaminants dissolve very quickly in water so are hard for other methods of filtration to remove. But unlike the others, RO is better able to handle fully dissolved pollutants.

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Idea IconHow To Get The Best Reverse Osmosis System

Getting the best reverse osmosis system means that you will efficiently and quickly purify the water in your home.

Sadly, not all RO systems are built the same. If you are considering purchasing a unit then there are a few things you should consider:

1. Know What Size Filter You Need.

The best reverse osmosis system can come in almost any shape or size. You can get it in a single water filter faucet right up to a whole house filter. However, if you are only worried about improving the quality of your drinking water then getting a single faucet filter is probably enough. On one hand, you might have issues with the quality of water in your whole house. Perhaps you’re finding dirty water in your shower and bathroom sink? If this is the case, then you should get a whole house RO unit.

2. Do You Know What You Want Reverse Osmosis To Remove?

The quality of water is different from one place to another. And there are some places that suffer from high levels of contaminants in water.

Tell the water company to send you details about your water supply. If your water is supplied from a municipal source then you can contact them to find out all the information about what is in your water. They have a legal obligation to fulfill this request and getting the information is usually free.

Alternatively, you can buy a test online that will tell you all the contaminants you have in your water – in a matter of minutes.

Once you know what you’re dealing with, find the best reverse osmosis system that can adequately deal with everything on your list.

It might also be worth testing all the water that comes into your home. The water pipes that take water into your kitchen might be fine but maybe the pipes in your bathroom are corrosive? Leaching lead into your water supply?!?

The only way to know for sure is to test the water that comes from every faucet in your home. This might seem like a lot of hassle but if you find that all the water in your home is perfect except from one source, then you only need to buy a faucet filter. So, checking all the taps is annoying but it could end up saving you money in the long run.

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Is Reverse Osmosis Water Good?

Healthwise the reverse osmosis process removes 92-99% of beneficial calcium and magnesium. However, most of the systems mentioned below “re-mineralize” i.e. they add healthy minerals back into the water.

Here are some other issues you might find with RO:

  • Reverse osmosis is one of the most efficient methods for purifying water however, it is not the fastest.
  • Be aware that the RO system can take some time, unless you have something like a faucet filter, which will produce water on-demand.
  • RO will often need a storage tank to store water that has been filtered (this is in the case of a whole house reverse osmosis water filter.)
  • The size of your whole house reverse osmosis tank will determine how much filtered water your home will have access to at that moment in time.

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cost symbol Reverse Osmosis System Cost

It is possible to get a good basic reverse osmosis unit for $150-$300 and an extra $100-$200 for replacing filters each year. This makes it one of the cheaper forms of water filtration.

The main thing that causes a difference in price is the features that the includes and if it can cope with a larger capacity.

This is because most reverse osmosis systems do more or less the same thing when it comes to how they filter water and what they are able to remove. However, if you want a faster, more efficient system that will supply water to a larger home – this will cost you more.

Also note that some RO water filters also include other types of filters like solid carbon absorption or activated charcoal filters. You can expect to pay more money if you have a system that includes multiple forms of filtration.

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Important Technical Issues To Consider Before Getting An RO System

One of the most important things to consider when selecting your reverse osmosis system is water flow.

RO filter units can sometimes require a minimum water flow rate and pressure to do its job properly.

If your home does not have a water supply that meets its minimum requirement then you may need a water pump to boost the water pressure for the RO unit to work properly.

If you have this issue, make sure you choose a filter that already comes with a water pressure booster pump. This will probably increase the cost but at least you can still use this water filtration system in your home.

Remember that reverse osmosis removes everything from your water. This includes things like the many minerals that can be good for your health.

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The Benefits Of Getting An RO System

The biggest advantage of getting a reverse osmosis filter system in your home is that it can filter a greater amount of contaminants than almost any of the others.

This combined with its inherent high efficiency gives you something that is both very powerful and capable of providing you with the highest quality of filtered water.

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Under Sink Reverse Osmosis Reviews

iSpring RCC7 5-Stage Reverse Osmosis Water Filter System Review

The iSpring has a 5-stage filter system. Yes, that means it filters the same water five times.

This means that this system can filter out almost all contaminants like fluoride, which is commonly found in public water supplies.

Red Cross Worst Features
  • It is a complicated system that also makes it more complicated to install when compared to more basic models.
  • This means you might need a plumber to install it.
Green Plus ArrowBest Features
  • On the plus side, the unit will come with everything you need to install.See customer reviewsThis includes things like Teflon tape and basic O-rings.
  • Do you want to try installing it yourself? Then you should watch some of the freely available videos online that demonstrate how to install it.
  • This RO filter comes with a 30-day money back guarantee.
  • It also comes with a 1-year satisfaction guarantee.

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Home Master TMAFC Artesian Full Contact Undersink Reverse Osmosis System Review 

As with all reverse osmosis filters, the Home Master TMAFC removes almost all contaminants. Did you know that many bottled water companies use reverse osmosis? So if you’re an avid bottled water drinker then you can expect the same quality as this machine produces.

Red CrossWorst Features

This is yet another complex system and it can be difficult for a non-expert plumber to install.See customer reviews

Green Plus ArrowBest Features
  • Reverse osmosis removes everything from your water. This includes things like the many minerals that can be good for your health. However, the Home Master system adds these minerals back.
  • This system also balances the pH so that your water does not become acidic. Thereby offering you benefits similar to alkaline water.
  • If you do want to install it by yourself then there are online videos to help you.
  • Everything you need to install the filter comes in the package.

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Home Master Ultra RO Under Sink Reverse Osmosis System Review

If you like the Home Master TMAFC Artesian but need something more advanced then this is for you.

This unit comes with all the best features of the previous model but adds a 6 stage filtration including a a UV filter that kills whatever bacteria and microorganisms are in your water.

Red Cross Worst Features
  • The filters are designed so that they are easy to replace, however, the clips are made from plastic so can be potentially quite fragile.See customer reviews
  • Note the fittings are made from plastic so there can be issues with them connecting to metal connectors.
Green Plus ArrowBest Features
  • Comes with 6 filters that includes an ultra violet (UV) filter. This means it will kill whatever bacteria and microorganisms are lurking in your water.
  • The unit has larger tubes and fittings so that it can increase the water flow rate.
  • It is fairly straightforward to install when compared to the others.
  • You can also expect the package to include everything you need to install.

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APEC ROES-PH75 Top Tier Reverse Osmosis Drinking Water System Review

APEC is one of the best water filter brands currently on the market. I have talked about them in many blogs in relation to water softer machines and it seems the filters are just as impressive.

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Green Plus ArrowBest Features
  • This is a super easy to install six-stage RO system.
  • This system is 100% made in the US (including the filters).See customer reviews
  • Even though RO tends to remove everything including minerals from your water, this APEC system reintroduces them. Specifically, calcium carbonate (which is also sourced from within the US) in order to balance the water’s pH.
  • Reverse osmosis systems usually create several gallons of wastewater to filter. However, the APEC RO system uses 3 gallons to make 1 gallon of filtered water. This is pretty low when compared to the others.

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iSpring RCC7AK-UV 7-Stage Reverse Osmosis Water Filter Review

If you need heavy duty water filtration then this system is for you because it uses a UV light. This is very effective at killing and destroying any microorganisms or bacteria in your water.

Red Cross Worst Features

This unit is a little difficult to install if you don’t have much plumbing knowledge.See customer reviews

Green Plus ArrowBest Features
  • It has a 7 Stage water filtration system. including a UV light to remove all impurities.
  • UV light filters tend to heat up the water while it is not flowing. This can make it too hot to do every day things like when you need it for drinking. It can become dangerous if it becomes too hot. However, the iSpring RCC7AK has a flow switch. This means  the UV light only comes on when the water flows.

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How To Install A Reverse Osmosis System

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The Best Reverse Osmosis Systems – Table

ProductBest FeaturesWorst FeaturesPrice Range 
iSpring RCC7 5-Stage
- 5-stage filter system.
- The unit will come with everything you need to install.
- Complicated to install if you have no plumbing knowledge.$$
Home Master Ultra RO
- Comes with 6 filters that includes an ultra violet (UV) filter.
- Larger tubes means bigger water flow rate.
- The fittings are made from plastic so there can be issues with them connecting to metal connectors.$$

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- This is a super easy to install six-stage RO system.
- Efficient wastewater removal.
None that I can find so far!$$
iSpring RCC7AK-UV 7-Stage
- 7 Stage water filtration system.
- Includes UV light filters.
- Difficult to install if you don't have much plumbing knowledge$$$
Home Master TMAFC Artesian
- Adds removed minerals back to water.
- Includes free online resources like installation video.
- Complicated to install if you have no plumbing knowledge.$$

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Scientific References 

Weber, Walter J. (1972). Physicochemical Processes for Water Quality Control. New York: John Wiley & Sons. p. 320.

Glater, J. (1998). “The early history of reverse osmosis membrane development”. Desalination. 117: 297–309.

auvetgoichon, B (2007). “Ashkelon desalination plant — A successful challenge”. Desalination. 203: 75–81.

Weber, Walter J. (1972). Physicochemical Processes for Water Quality Control. New York: John Wiley & Sons. p. 320.

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I'm a health author, science enthusiast and 100% certified geek. My passion is to help you take control of your health and well-being by understanding the true importance of good quality water and healthy hydration.