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Whole House

Protect your family with pure water for drinking, bathing, and appliances.
Clean water for whole house: reduces sediment, chlorine, odors, tastes.
Revitalise your water with Australia’s leading water softener system.
Eliminate bacteria and viruses across your entire home with UV filtration.
Under Sink

Ultra-pure drinking water: removes fluoride, chlorine, lead, and harmful contaminants.
Rebalance your water: added calcium, magnesium for healthier alkaline drinking.
Chilled & Boiling

Instant hot water for beverages and cooking, purified and mineral-enriched.
Enjoy instant, filtered, mineral-rich chilled water straight from your tap.
Water Filter Package Bundles

Total home water protection with advanced reverse osmosis purification.
12-month interest-free, 4 Afterpay instalments or pay on completion with our No-Fit-No-Fee Guarantee.
Hassle-free filter replacements ensure consistently clean, safe drinking water at home.
Professional licensed plumber installs your water system perfectly, quickly, and at no cost.
Exclusive membership program offers decade-long savings and priority benefits for members.
Complete peace of mind with comprehensive warranty and reliable product guarantee.
Precision-designed water systems, crafted in Australia for durability, reliability, and peak performance.
ES5Q FRONT BYPASS MODE ON 2025-26
Trusted Australia-Wide
Thousands of customers rely on our systems every day; consistently top-rated for quality, service and long-term reliability.
Australia & New Zealand Coverage
With 33 years of water filtration experience and over 35,000 customers served, we provide fully installed, hassle-free systems across Australia and New Zealand.
Reverse Osmosis Water Filters

Reverse Osmosis Water Filters

Fully Installed, Australia-Wide

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

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01
Choose your Package
Sit back and relax with our easy turnkey solution. Flexible payment options make it simple.
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02
Frozen Price Guarantee
Enjoy peace of mind with our no-fit-no-fee guarantee. Frozen price includes full installation.
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03
Pay Only Once Installed
No upfront costs, no hidden surprises. You pay only once your system is fully fitted and working.
Pure Water, Zero Upfront

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

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TOUCH
Free No-Charge
Installation on New Systems*
Free No-Charge
Installation on New Systems*
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TOUCH
Cartridge Replacement Support & Care
Cartridge Replacement Support & CareCourtesy reminder calls to schedule a service, post out or arrange installation of replacement water filter cartridges.
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TOUCH
Technology Updates
Technology UpdatesAccess the very latest, cutting-edge, breakthrough water filtration technology.
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TOUCH
Free Postage
Free Postage
Enjoy the convenience of having your up to date water cartridges replacement delivered straight to your door – completely for free.
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TOUCH
Free 4 Yr Guarantee Extension
Free 4 Yr Guarantee Extension
Extra Product Guarantee Extension from market normally 1 Year to 5 YEARS (Service call outs 2 years)

Explore Whole House Water Filter Packages

Years of Business

ES5Q ES3

Whole House + Reverse Osmosis Water Filter

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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Register | Install Now | Pay Later

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Elite Series 5Q Wellness Package

✅ 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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Register | Install Now | Pay Later

Elite Series 3

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

Reverse Osmosis Wellness Water Filter

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!

  • PH7+ Balanced Water

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    Produces perfectly pH-balanced alkaline water, helps minimise the fluctuations of your body's pH.

  • Puts Healthy Minerals Back In

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    Essential minerals such as Calcium, Magnesium and Potassium which were lost while purifying the water are returned.

  • Like Changing a Light Bulb!

    Cartridge Replacements

    No tools required. Cartridge replacements are quick and safe, designed to be as easy as changing a light bulb - sanitary and safe!

Reverse Osmosis Water Filter System

A Better Design & Quality

Featuring Reverse Osmosis – the same technology used for bottled water

  • Stylish Stainless Steel Tap

    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.

  • Intuitive Smart Gauge

    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.

  • Flush Valves

    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.

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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.

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es3 stage 2-1

Captures larger particles and protects the RO system from damage.

Removes:

  • Dirt
  • Rust
  • Sand
  • Other visible impurities

es3 stage 2-1

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

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The heart of the system, the RO membrane removes microscopic contaminants that most standard filters cannot.

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
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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.

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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.

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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.

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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?

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.
Stage 1 — 5 Micron Sediment Filter
Stage 1 — 5 Micron Sediment Filter

Captures larger particles and protects the RO system from damage.

Removes:

  • Dirt
  • Rust
  • Sand
  • Other visible impurities
Stage 2 — 1 Micron Activated Carbon Filter
Stage 2 — 1 Micron Activated Carbon Filter

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
Stage 3 — 0.0001 Micron Reverse Osmosis Membrane
Stage 3 — 0.0001 Micron Reverse Osmosis MembraneThe heart of the system, the RO membrane removes microscopic contaminants that most standard filters cannot.

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
Stage 4 — Mineral Restoration
Stage 4 — Mineral RestorationPurified water passes through a re-mineraliser to restore healthy minerals for balance, taste, and hydration.

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

far-infrared.jpg
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.
tourmaline.jpg
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-balls-400x400 (1)
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-482x400
Magnetic Energy Rocks
As water flows past magnetic energy rocks, they attract and trap contaminants, resulting in purer and fresher-tasting water.

GALLERY

Why Great Water Filters Australia?

Trusted Australia-Wide
Thousands of Australian customers rely on our systems daily, consistently top-rated for quality, service, and long-term reliability for decades.
10-Year VIP Savings
Exclusive membership program delivering decade-long savings, priority support, free filter reminders, and extended system care benefits.
All-Home Water Care
Multi-stage filtration systems professionally installed to deliver clean, healthy water across every tap, backed by complete service support.
33 Years in Business
35,000 Water Filters Installed
90% 5 STAR RATING

Reverse Osmosis Water Filters Reviews

Excellent service and support as always

“Excellent service and support as always
Whole House and Reverse Osmosis filtration”

J Peters8 Aug 2025

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!”

Despina Tona1 Jun 2025

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.”

Jon Phillips30 Aug 2024

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. ”

Leanne Jones
Leanne Jones22 May 2024

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.

Haldun Tokman5 Nov 2023

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.

Jack Ennis2 Jul 2023
Compare Reverse Osmosis System
Compare The Market

Which Reverse Osmosis System is Best?

Our under sink Reverse Osmosis water filters remove up to 99% of contaminants, restore essential minerals, and deliver balanced pH7+ water. Built for high performance and easy maintenance, our compact, undersink RO system includes quick-change cartridges and professional installation, trusted in homes, offices, and workplaces across Australia & New Zealand.
Many customers search for the difference between reverse osmosis vs carbon filters, reverse osmosis vs alkaline water systems, or which RO system is best for home use. The ES3 Reverse Osmosis Water Filter package is designed to outperform standard under sink filters by combining ultra-fine RO membrane filtration with a Wellness Re-mineraliser that restores healthy minerals and taste.

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.
Greate Water Reverse Osmosis Filter System
Other Reverse Osmosis Systems
FEATURES
Great Water ES3
Other Reverse Osmosis Systems
Intuitive Pressure Gauges
Sanitary Safe
Removes 99% Fluoride
Simple Quick Change Cartridges
Returns Essential Minerals
LIVING WELLNESS WATER

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.

Undersink Water Filters BG

speciality Taps

Reverse Osmosis & Alkaline Water Filtration Systems
Our water filter systems remove contaminants, add healthy minerals and balance pH to 7+. Designed for quick cartridge replacement and trusted in homes, offices and workplaces throughout Australia and New Zealand.
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Lead-Free Stainless Steel
European-style tap made from lead-free stainless steel for safe, pure drinking water.
Stylish Finishes
Available in brushed nickel, polished chrome, and matte black to complement any kitchen design.
Durable Construction
Resistant to corrosion and tarnishing for long-lasting reliability.
Easy Installation
Compatible with most RO systems, designed for quick and simple integration under your sink.

GUIDES

Specification
Dimensions (Filter Unit) - Filters- 33cm (W) x 8cm (D) x 33cm (H)
Storage Tank - 28cm (Diameter) x 38cm (Height)
Flow Rate - 3 Litres Per Minute
Weight - 3.5kg
Tap Drill Hole Diameter - 12mm
Cartridge Life
-
Cartridges 1,2 and 4 = 12 Months
- Cartridge 3 (Membrane) = 24 Months
What's in the box?
Download Brochure
Installation
Cartridge Change
Troubleshooting

FAQs

What does the ES3 Reverse Osmosis system remove?
The ES3 removes up to 99% of contaminants, including:
  • 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
With a filtration capacity of 0.0001 microns, the ES3 delivers exceptionally pure water for everyday use.
Can I use RO water from the ES3 for cooking? Yes. ES3-purified water is free from impurities, which enhances the flavour of food, tea, and coffee. Many households also prefer it for baby formula and health-conscious cooking.
How often should I replace ES3 cartridges and membranes?
  • Cartridges: every 10–12 months (depending on water quality and usage)
  • RO membrane: every 24 months for consistent performance
We provide reminders and easy access to replacement kits to keep your ES3 running at its best.
Will the ES3 system reduce my water pressure? The ES3 is designed to minimise pressure loss, typically reducing flow by less than 5%. This ensures strong and reliable performance at your kitchen tap.
Can the ES3 be used with all water sources?

Yes. The ES3 is compatible with:

  • Town water (mains supply)
  • Tank water
  • Bore water
For tank or bore water, additional pre-filtration or UV treatment may be recommended depending on local conditions.
What maintenance does the ES3 require? Routine care is straightforward:
  • Replace filters and membrane as scheduled
  • Periodically clean the system
  • Check performance indicators to ensure optimal water quality
Our team provides ongoing support, reminders, and replacement parts.
Does the ES3 include a remineralisation stage?
Yes. The ES3 features a Wellness Re-mineraliser, which adds back essential minerals such as:
  • Calcium
  • Magnesium
  • Sodium
  • Potassium
This restores taste, balances pH, and supports overall health.
Is the ES3 Reverse Osmosis system certified for safety and quality? Yes. The ES3 is built with high-grade components and undergoes rigorous testing to meet strict safety and performance standards. It is trusted across Australia for reliable water purification.
What’s the best Reverse Osmosis Water Filters in Australia? ES3 Reverse Osmosis Water Filter is one of Australia’s most trusted under-sink systems, delivering bottled-water quality straight to your tap. With 4-stage RO filtration, it removes up to 99% of contaminants, including fluoride and heavy metals, while restoring essential minerals for balanced pH7+ water that tastes pure and fresh — all with free installation and no upfront cost.
NEWS & ARTICLES

WHAT'S THE BEST PH WATER TO DRINK?

If you’re concerned about the quality of your water and want to ensure you and your loved ones are drinking the best, understanding water pH is crucial.
Great Water Filters Scheduled Events 2025/6
19-21 September

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BRISBANE

Brisbane Convention & Exhibition Centre

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

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10-12 October 2025

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SYDNEY

International Convention Centre Sydney

Show stand: A25

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

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17-19 April 2026

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MELBOURNE

Melbourne Convention & Exhibition Centre

Show stand: A05

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

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5-7 June 2026

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PERTH

Perth Convention & Exhibition Centre

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

More Info >>>

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.