Reverse Osmosis Water Filters
Our ES3 Reverse Osmosis water filter package is one of Australia’s most trusted under sink solutions, delivering bottled water quality straight to your home. Using world-famous RO technology, it removes contaminants, restores essential minerals, and provides perfectly balanced drinking water
100% No Risk
No Upfront Payment Required
Only Pay when Installed
3 Steps to Pure Water



Normally $1,700 Now $1,195 with FREE Installation
Option A: 4 payments from $300 with AfterPay
Option B: 12 months interest-free from $100 with ZIP/HUMM


Installation on New Systems*
Installation on New Systems*
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Explore Whole House Water Filter Packages
- The Smarter Choice
- ES5Q + ES3
- ES5Q

Years of Business



Upgrade to our dual filtration system for unparalleled purity and wellness in every drop of water.
NORMALLY $6,700
NOW $4,995 with Free Installation
Option A: 4 payments from $1,250 with AfterPay
Option B: 12 months interest-free from $420 with ZIP/Humm
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✅ Intuitive Gauges
✅ 316 Marine Grade Stainless Steel
✅ 5-Stage Super Filtration
✅ High Flow- Digital Filter Lifesaver
✅ Wellness Purity Technology
✅ Vortex Softener
NORMALLY $5,000
NOW $3,995 with Free Installation
Choose your payment plan:
Option A: 4 payments from $999
Option B: 12 months interest-free from $333 with ZIP/Humm
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Reverse Osmosis Wellness Water Filter
The ES3 Reverse Osmosis water filter delivers the highest standard of under sink water purification, using the same world-renowned RO technology trusted in bottled water production.
Designed for Australian homes, it combines advanced filtration with long-term wellness benefits, giving your family cleaner, safer, and better-tasting water every day.
Here’s why families across Australia choose the ES3:
✅ Fluoride Removal with RO Technology – Advanced reverse osmosis membrane proven to reduce fluoride for safer, healthier drinking water
✅ Perfectly Balanced pH7+ Water – Restores natural alkalinity to improve hydration, taste, and overall wellness
✅ Essential Mineral Return – Reintroduces vital minerals such as calcium, magnesium, sodium, and potassium for flavour and vitality
✅ Quick Change Cartridges – Simple, tool-free replacements make ongoing RO system maintenance fast and hassle-free
✅ High Performance Reverse Osmosis Filtration – Removes up to 99% of contaminants including chlorine, pesticides, heavy metals, bacteria, and other impurities
✅ Comprehensive Water Protection – Semi-permeable RO membrane blocks microscopic pollutants to deliver consistent purity
✅ Compact Under Sink Water Filter System – Space-saving design, installed neatly under your kitchen sink with professional fitting included
✅ Purified Water for Drinking & Cooking – Fresh, clean water for every glass, meal, tea, or coffee, free from chemicals, odours, and harmful substances
✅ TDS Reduction for Safer Water – Lowers Total Dissolved Solids, ensuring consistently high quality, healthier water
NORMALLY $1,700 – Now $1,195 Installed
Choose your payment plan:
✅ Option A: 4 payments from $300
✅ Option B: 12 months interest-free from $100 with ZIP/Humm
Technology Light Years Ahead
Our Reverse Osmosis membrane provides ultra-fine filtration down to 0.0001 micron, the same proven technology trusted in bottled water production, under your sink!
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PH7+ Balanced Water

Produces perfectly pH-balanced alkaline water, helps minimise the fluctuations of your body's pH.
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Puts Healthy Minerals Back In

Essential minerals such as Calcium, Magnesium and Potassium which were lost while purifying the water are returned.
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Like Changing a Light Bulb!

No tools required. Cartridge replacements are quick and safe, designed to be as easy as changing a light bulb - sanitary and safe!
A Better Design & Quality
Featuring Reverse Osmosis – the same technology used for bottled water
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Stylish Stainless Steel Tap

Includes a stylish European style tap, made lead-free stainless steel to provide safe, pure drinking water to you and your whole family daily.
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Intuitive Smart Gauge

Built-in smart gauge provides real-time feedback on filter status, helping protect the RO membrane and ensuring reliable, long-term operation.
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Flush Valves

Simple, clean & easy maintenance to flush cartridges regularly and efficiently. Designed to protect the reverse osmosis membrane.
3-way Tap: $395 extra
Single Color Tap: $195 extra
Specialty Taps for Reverse Osmosis Water Filters
Upgrade your Reverse Osmosis water filter system with a premium specialty tap, designed for both performance and style. Engineered to deliver purified water directly from your RO unit, these taps ensure your family always has access to clean, safe drinking water at the turn of a handle.

What Does Reverse Osmosis Water Filtration Remove?
Our industrial-grade Reverse Osmosis (RO) water filter system removes almost all traces of impurities, protecting your health and improving taste. By combining sediment filtration, activated carbon, and a high-performance RO membrane, it delivers pure, clean, and great-tasting water for everyday use.
- Overview
- Stage 1 — 5 Micron Sediment Filter
- Stage 2 — 1 Micron Activated Carbon Filter
- Stage 3 — 0.0001 Micron Reverse Osmosis Membrane
- Stage 4 — Mineral Restoration


Captures larger particles and protects the RO system from damage.
Removes:
- Dirt
- Rust
- Sand
- Other visible impurities

Uses high-performance granular activated carbon to target chlorine and chemicals that affect taste and safety.
Removes:
- Free chlorine
- Bad odours & taste
- Organic contaminants
- Pesticides & herbicides
- Chemical by-products

Removes up to 99% of:
- Fluoride
- Heavy metals (lead, mercury, arsenic)
- Dissolved salts & Total Dissolved Solids (TDS)
- Bacteria & pathogens (e.g. E. coli, Salmonella, Hepatitis A)
- Pesticides, herbicides, & other chemical pollutants
- Organic compounds & odours
Far Infrared Rocks
Enhances the purification process through its unique properties. It stimulates molecular movement, promoting the breakdown of contaminants and enhancing the removal of impurities.
Negative Ion Rocks
Attract and neutralize positively charged contaminants, effectively purifying the water. By harnessing the power of negative ions, these rocks help create a cleaner, healthier water supply.
Alkaline Rocks
As water passes through alkaline rocks, they release minerals like calcium, magnesium, and potassium, enriching the water with essential nutrients. This process not only improves the taste and odor of water but also helps neutralize acidity.
Magnetic Energy Rocks
As water flows past magnetic energy rocks, they attract and trap contaminants, resulting in purer and fresher-tasting water.
What Does Reverse Osmosis Water Filtration Remove?

Captures larger particles and protects the RO system from damage.
Removes:
- Dirt
- Rust
- Sand
- Other visible impurities

Uses high-performance granular activated carbon to target chlorine and chemicals that affect taste and safety.
Removes:
- Free chlorine
- Bad odours & taste
- Organic contaminants
- Pesticides & herbicides
- Chemical by-products

Removes up to 99% of:
- Fluoride
- Heavy metals (lead, mercury, arsenic)
- Dissolved salts & Total Dissolved Solids (TDS)
- Bacteria & pathogens (e.g. E. coli, Salmonella, Hepatitis A)
- Pesticides, herbicides, & other chemical pollutants
- Organic compounds & odours

Adds back:
- Calcium
- Magnesium
- Sodium
- Potassium
Benefits:
- Balances pH to pH7+
- Improves taste & freshness
- Provides mineral-rich hydration
- Supports overall wellbeing
Inside the ES3 Re-Mineralising Filter


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GALLERY










Why Great Water Filters Australia?






Reverse Osmosis Water Filters Reviews
Excellent service and support as always
“Excellent service and support as always
Whole House and Reverse Osmosis filtration”
Amazing company and reverse osmosis sink water filter
“We recently had a reverse osmosis water filter installed under our kitchen sink, and we couldn’t be happier! The water quality is absolutely amazing — crystal clear, pure, and tastes incredible. It’s made a huge difference in our daily lives, from drinking water to cooking and even making tea and coffee.
The installer was brilliant — professional, knowledgeable, and efficient. They made the entire process smooth and stress-free, and everything was left clean and tidy afterward.
We’re so happy with this investment! The price was also fantastic — excellent value for such a high-quality system and service. Highly recommended to anyone considering improving their home’s water quality. One of the best decisions we’ve made!”
Reverse Osmosis Water Filter
“We are really happy with our RO water filter.
Great communication by the company.
Hayden was really helpful on the phone and our installer was very professional.”
Great buy
“Was so easy to sort out. Purchased reverse osmosis online, plumber came within days to install. Water is so much better. Very happy with it. ”
Great Water reverse osmosis
I recently had a reverse osmosis water filter system installed, and I couldn't be happier with the results. One of the most significant changes I've experienced is the increased sense of safety knowing that I'm now getting properly filtered tap water. The water not only tastes better, but I also have the peace of mind that it's free from impurities. What's more, this system retains the necessary minerals in the water, ensuring that I'm not missing out on any essential nutrients. It's been a fantastic addition to my home, and I highly recommend Great Water for anyone looking to improve the quality of their drinking water.
Great Service, Highly Recommend
Fantastic service from Great Water Filters Australia. The team were so friendly and helpful. Our Reverse Osmosis system was installed so quickly by Levon and works perfectly. I highly recommend this company. We no longer need to buy bottled water or need a kettle! Thanks to Dave, Levon and Trish for your help.
Which Reverse Osmosis System is Best?
Not sure which reverse osmosis water filter is right for you? Use our side-by-side comparison to confidently choose the best Reverse Osmosis Water Filter for your household, whether you need bottled-water quality, fluoride reduction, or low-maintenance whole-home care.


World's Most Advanced Whole House Filter
Pure Water in Every Tap in your Home. Revitalise your health & home with pure, filtered water through every tap with our whole house water filter range.
Our Whole House Water Filtration Systems are designed to deliver clean, safe, and healthy water to every tap in your home — protecting your family from chlorine, odour, bacteria, viruses, chemicals, and impurities. Your home deserves more than just filtered drinking water. With purified water flowing through every pipe, you’re not only safeguarding your health but also preserving your appliances and enhancing your entire lifestyle.
Here’s why families across Australia trust us:
✅ Beautiful Design & Smart Door Access
✅ Built in SS Bypass
✅ Intuitive Notification Gauges
✅ Quality 316 Marine Grade Stainless Steel
✅ Filtration up to 1 micron
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Specialty Taps for Reverse Osmosis Water Filters
Upgrade your Reverse Osmosis water filter system with a premium specialty tap, designed for both performance and style. Engineered to deliver purified water directly from your RO unit, these taps ensure your family always has access to clean, safe drinking water at the turn of a handle.
speciality Taps

GUIDES
- Cartridges 1,2 and 4 = 12 Months
- Cartridge 3 (Membrane) = 24 Months
FAQs
- Fluoride, chlorine, and pesticides
- Heavy metals such as lead and mercury
- Bacteria and viruses (E. coli, Salmonella, Hepatitis A)
- Organic compounds, odours, and chemicals that affect taste
- Cartridges: every 10–12 months (depending on water quality and usage)
- RO membrane: every 24 months for consistent performance
Yes. The ES3 is compatible with:
- Town water (mains supply)
- Tank water
- Bore water
- Replace filters and membrane as scheduled
- Periodically clean the system
- Check performance indicators to ensure optimal water quality
- Calcium
- Magnesium
- Sodium
- Potassium
WHAT'S THE BEST PH WATER TO DRINK?
- SEPTEMBER
- OCTOBER
- APRIL
- JUNE

BRISBANE
Explore our range today and experience the benefits of clean, safe, and healthy water.

SYDNEY
Show stand: A25
Explore our range today and experience the benefits of clean, safe, and healthy water.
More Info >>>

MELBOURNE
Show stand: A05
Explore our range today and experience the benefits of clean, safe, and healthy water.

PERTH
Explore our range today and experience the benefits of clean, safe, and healthy water.
Ready to Install Your Reverse Osmosis Water Filter?
Enjoy bottled-water quality at home with the ES3 Reverse Osmosis water filter. It removes up to 99% of contaminants, restores essential minerals, and delivers balanced, great-tasting water every day.
Now just $1,195 with free professional installation and long-term care included. Call now.



