8 Best Reverse Osmosis Systems in Australia: (Reviews & Guide 2023)!

Are you searching for the best reverse osmosis water filter in Australia and want to buy a new one? If yes, you have stumbled upon the right page. Read on. In this best reverse osmosis water filter  review, we will list the 8 best RO water filters in Australia for you to choose from. We will also explore the basics of a RO system, what you need to consider while buying a RO system, and much more.

There are many ways people filter water. And there are different types of filtration systems that people use to purify and filter water. A reverse osmosis system is one of the most efficient water filtration systems out there in the market. It removes 95-99 per cent of contaminants from the water and gives you clean water for drinking, cooking, and other purposes.

If you’ve been searching online or researching various RO systems, you know that there are many options to choose from. Some RO water filters promise to remove all contaminants from the water but hardly deliver what they promise. Thankfully, there are some high-quality RO water filters out there.

To make it easier for you to choose the best reverse osmosis water filter, we have created this comprehensive list. The RO water filters that we have recommended below are high-quality water filters. They will do the job well and will also last you for many years to come.

Our recommendations are based on in-depth market research, a critical analysis of each RO water filter, customer reviews, brand reputation, quality, and performance.

Reverse Osmosis Water Filtering System in Australia – What is it?

Before you purchase a reverse osmosis water filtering system, it is crucial that you know what this system is and how it works. Most people have heard about the RO system but do not know how it works or what it does exactly. This section of the review will clearly explain how the RO system works and the basics of the RO water filtration system.

A reverse osmosis system is a water purification system. It has a unique technology in which the water passes through a semi-permeable membrane. This membrane traps all contaminants and pollutants that there floating around in the water. The RO system is so potent that it even removes dissolved pollutants from the water.

These types of water filtration systems can remove microscopic contaminants from the water. They can remove particles as small as molecules, ions, and even some types of bacteria that are lethal for human health. Because RO water filtration systems are so potent and effective, they are used in the industrial production of potable water.

The RO process also can remove salt from salt water and give you fresh and clean drinking water. RO water filters are used to recycle water, for treating wastewater and even produce energy.

The Science Behind Reverse Osmosis Filtration System

To understand how a RO system works, it is essential to understand the concept of Osmosis. Osmosis is a natural process that occurs in nature. In this process, less concentrated fluids flow towards the higher concentrated fluids through a semi-permeable membrane. For example, freshwater will flow towards the saline solution when kept in a container separated by a semi-permeable membrane.

Reverse Osmosis is a similar process but only in reverse. This means the higher concentrated fluids flow towards, the lesser concentrated fluids with the application of an external force. As the stronger fluid moves towards the lesser concentrated fluid, the semi-permeable membrane traps all the contaminants, thereby filtering the water.

Things to Consider When Buying a Reverse Osmosis Water Filter

Before you buy the best reverse osmosis water filter, it may help you consider a few things. Considering these things will help you make the right choice and be happy with your purchase in the long run.

Storage Space

The first and most important thing to consider while buying a RO system is the space it will require. A RO water filter is not a small piece of equipment. It requires quite a bit of space. Not only will you require space for the RO system’s pre-filters and other components but also for the RO tank. So make sure you have enough space for the whole system to fit and work perfectly.

Water Pressure

Another critical thing to consider while buying a RO system is the water pressure at your house. Most RO systems need a water pressure of at least 40 PSI. With a PSI below 40, the RO system will most likely not work. Some RO water filters come with an in-built booster pump, while others do not come with a booster pump. It is important to note that if the water pressure does not increase even with a booster pump, the RO system most likely won’t work for your household.

Water Usage

Another significant point to consider while buying a RO system is your water usage and the quantity of water you can access. While RO systems are very effective in filtering water, they also waste large amounts of water. Often the contaminated water is way more than the quantity of water you receive after the filtration process. In simple terms, RO systems create more wastewater than filtered water.

If you do not have an abundance of water and cannot afford to create wastewater, RO water filters may not be for you.

Water Source

If you live in a city, you most likely receive your water supply from the municipal water system. If you live in a suburban area or a rural area, you most likely own a well, and the well is your primary source of water. When buying a RO water filter, carefully check the description as some RO filters are more equipped to filter well water than others.

Mineral Reinforcement

The best thing about reverse osmosis water filters is that they are extremely good at filtering water. They remove almost all contaminants from the water. But as they remove all the pollutants, they also remove many essential minerals from the water. And water without these essential elements is not so beneficial for human health. So, when you buy a RO system, ensure that it has an alkaline re-mineralizer filter that puts back the beneficial minerals into the water.

Filter replacement

Reverse osmosis filtration systems are generally easy to maintain. They do not require a lot of work to maintain and clean. Once in a while, you will need to check the filters and replace them if needed. RO systems have more than one filter. And sometimes, you might need to change a filter once its potency is reduced. It’s important that you keep track of every filter you change to know which one you need to change next. This also adds to the extra cost, but the good news is that it is not very often.

Best Reverse Osmosis Water Filter in Australia – Top 8

Waterdrop RO Reverse Osmosis Drinking Water Filtration System


This Waterdrop reverse osmosis makes it to the top of our list for a few solid reasons. Firstly because we wholeheartedly love and trust the brand Waterdrop. It was founded in 2015 to provide the best water purification solutions. And since then, Waterdrop has been making quality water filtration systems that work flawlessly.

This reverse osmosis water filtration system is one such product by Waterdrop that is the best of the best. It is certified and tested by NSF against standards 58 and 372. The system is easy to install and easy to use. It comes with a TDS display screen that allows you to monitor the water quality and much more.

We admire this RO filtration system even more because it puts the water through a unique 7 step filtration process. It removes lead and 1000 other pollutants from the water. The carbon block made from a high-quality coconut shell removes almost all contaminants from the water and improves its taste. And the tankless design just adds the cherry to the cake as it allows the system to fit in easily without taking up much space.

Key Features

  • NSF certified
  • Tankless design
  • TDS monitoring panel
  • 400 GPD fast water flow
  • 7 stage deep filtration process
  • DOW® RO membrane

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


Just like Waterdrop, Home Master is another brand we absolutely love when it comes to water filtration systems. They have been making high-quality water filtration for many years and have been doing a fantastic job at it. This RO water filtration system is one of their many premium-quality water filtration systems that remove almost all water contaminants.

It removes 99 percent of contaminants like heavy metals, sediments, and much more from the water. But what we love more about this RO system is that it adds back the calcium and magnesium minerals that were lost during the filtration process. So, you get pure water with all the added essential minerals in it.

Key Features

  • Restores natural calcium and magnesium minerals
  • Removes up to 99 percent of contaminants
  • Long-lasting and easy to change filters
  • Change filter every 2000 gallons

SoftPro GREEN Reverse Osmosis Water System


This filter removes up to 96 percent of contaminants from the water. It removes chlorine, chloramine, lead, chromium, nitrates, toxic heavy metals, arsenic, fluoride, bacteria, and viruses from the water. The system does this by putting the water through a 5 stage filtration process that removes 1000+ pollutants from the water.

This excellent RO system can filter up to 75 gallons of water per day. What’s even more impressive about this RO system is that it wastes less water than traditional RO systems. While traditional RO systems waste up to 400 percent of the water, this RO system wastes only one-third of it.

Key Features

  • Comes with an advanced alkalizing filter
  • Alkalizing filter reduces water acidity and adds minerals back into the water
  • 5-stage RO drinking water filtration system
  • Filters up to 75 gallons per day
  • Wastes very little water
  • 5 years warranty

iSpring RCC7AK 6-Stage Reverse Osmosis Drinking Water Filter System


ISpring is another fantastic brand that makes high-quality water filtration and purification products. What makes this the best reverse osmosis water filter is its unique 6 stage water filtration process that removes up to 98 per cent of the contaminants from the water.

The additional 6th stage includes the remineralization process. In this stage, the water goes through the remineralization filter. This filter re-introduces the lost minerals back into the water, making the water fresh, pure, and healthy. This reliable RO system is easy to install, and you can do it yourself at home.

Key Features

  • Removes up to 98% contamination
  • Unique 6-Stage alkaline remineralization filtration
  •  Restores healthy minerals
  • Elegant European-style kitchen faucet
  • Comes with three extra-long life pre-filters
  • Easy to install (DIY)

Home Master TMHP HydroPerfection Undersink Reverse Osmosis Water Filter System


This is yet another great reverse osmosis water filtration system by Home Master. It is not their first or last but one of the many water filtration systems they have, but it is definitely one of the best. It promises to solve the most common problems associated with traditional RO systems and delivers what it promises effectively.

This RO water filter removes 98 per cent of contaminants from the water, including lead, fluoride, iron, chemicals, and heavy metals. It also has a unique and patented full contact technology that (twice) adds minerals like calcium and magnesium back to the water after the filtration process.

Key Features

  • Remove 98 per cent of contaminants
  • Patented Full Contact technology
  • Re-introduces minerals twice during the purification process
  • Advanced long-lasting filters
  • Change filter after one year or after 2000 gallons of water
  • Iron pre-filter protects RO membrane

APEC Water Systems ROES-PH75 Essence Series


This APEC reverse osmosis water filter is another high-quality filter that removes 99 per cent of the contaminants from the water. It takes the water through a 6 stage filtration process that efficiently removes contaminants from it. This unique RO system can filter up to 75 gallons of water per day and requires a water pressure of 40-85 PSI.

Another reason this RO system made it to our list is for its high-quality cartridges that use food-grade calcium to enhance the pH of the water. It is a WAQ certified system with long-lasting premium filters designed to treat well and tap water. APEC is a brand we highly recommend as they have been making quality water filtration systems for more than 20 years.

Key Features

  • A 6-stage water filtration system
  • Remove up to 99% of contaminants
  • Improves alkalinity of water
  • Adds minerals to the water
  • WQA certified system
  • Premium long lasting filters
  • 2 years warranty
  • Comes with a 100% lead-free designer faucet

iSpring RCC7 High Capacity Under Sink 5-Stage Best Reverse Osmosis Water Filter


This RCC7 is another high-quality RO system by iSpring. It is tested and certified by NSF against standard 58 and removes up to 99 per cent of contaminants like lead, iron, sediments, and much more from the water.

This system is easy to install, and you can easily do it by yourself at home. The whole system fits under the sink and is also easy to clean and operate.

Another reason this RO system made it to our best reverse osmosis water filter list is its robust 5 stage filtration process. The 5 stage filtration process ensures that the water goes through rigorous cleansing 5 times. This RO filtration system is made from premium-quality materials and has premium-quality durable components.

Key Features

  • NSF certified against standard 58
  • Removes up to 99% of contaminants
  • Easy, do-it-yourself installation
  • Premium-quality components
  • Comes with a sleek European-style metal faucet

Express Water – ROALK10DCG Reverse Osmosis Alkaline Water Filtration System 


Last but absolutely not least, we have this powerful 10-stage reverse osmosis filtration system. Just because it falls at the end of our best reverse osmosis water filter list does not mean that it is any less potent and powerful than the ones we have previously recommended. It puts the water through a whopping 10 stage filtration process and removes 99.99 per cent of contaminants from the water.

It removes chlorine, lead, nitrates, calcium, bacteria, and much more from the water. And just like any high-quality filtration, the alkaline water filter re-introduces the lost minerals back into the water. The alkaline filter adds back potassium, calcium, magnesium, and other minerals to the water.

Key Features

  • Removes up to 99.99% of contaminants
  • Comes with an alkaline water filter
  • Re-introduces potassium, magnesium, and other minerals
  • Easy to install
  • 10 stage filtration process

FAQs for the Best Reverse Osmosis Water Filter

  • What Contaminants Do RO Systems Remove?

Water is an essential element vital for human survival. And what’s even more important is clean and fresh water. RO systems have an important task to purify the water and remove contaminants from it that aren’t beneficial. A reverse osmosis system has many filters. Each filter is responsible for eliminating specific pollutants and contaminants.

RO systems remove lead, dirt, sand, copper, fluoride, magnesium, and many other pollutants from the water.

  • Are There Any Risks To My Health With The RO System?

RO systems have the crucial task of removing contaminants from the water and keeping us safe and healthy. And so, instead of harming us, reverse osmosis filtration systems actually have many health benefits. Image drinking water that is contaminated with bacteria and pollutants. You would surely fall sick. And a quality RO system saves you from all the medical bills.

But it is important to note that while they remove most contaminants from the water, they also remove beneficial minerals like calcium and magnesium. It is vital for human beings to receive these minerals from the water to stay healthy. They are essential for our bone health and much more. So, the benefits and risks of using a RO system are still under debate. However, there are no real health risks involved when using a quality RO water filter. In fact, it has many health benefits.

  • How Does The RO Water Filtration System Affect The Environment?

The only problem with RO systems is that they waste a lot of water. For every 2 gallons of filtered water, they produce 8 gallons of wastewater. You can, however, use this wastewater for other purposes. While this system does produce a lot of wastewater, it also prevents thousands of people from buying plastic bottled water, thus saving the environment from a lot of toxic plastic.

  • How Long Does A RO System Last?

A reverse osmosis system lasts for many years as long as you maintain it well. Just like anything, these systems, too, need maintenance from time-to-time. Make sure to change the filters when it is required, and you are good to go.

  • Is A Water Distiller Similar To A RO System?

A water distiller and a RO system use different types of devices and different processes. But the end result in both of them is the same – filtered clean water. The RO system uses a semi-permeable membrane and various filters to trap the contaminants in them. And a water distiller boils the water and then uses the condensed steam to purify the water. However, both of these water filtration systems benefit from a quality carbon filter.


Whether you live in the city or in a rural area, having a high-quality reverse osmosis water filtration system can benefit you. If you desire clean and fresh drinking water, give a reverse osmosis water filter a try. These filtration systems are some of the best and do an excellent job at removing purities from the water.

They remove 99 per cent of contaminants from the water. Yes, it may cost a bit more initially when you setting it up and changing filters. But we believe the few extra dollars you pay are worth the clean water you receive in return. We hope that the list we have provided you with above can help you choose the best reverse osmosis water filter and have access to clean, safe water.

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