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 of $300 with AfterPay
Option B: 12 months interest-free of $100 with ZIP/HUMM


Installation on New Systems*
Installation on New Systems*
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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 of $300
✅ Option B: 12 months interest-free of $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.
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 ES2 System


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GALLERY










Why Great Water Filters Australia?










Reverse Osmosis Water Filters Reviews
Support is unparalleled. I get help when I need by phone and in the event of something going wrong, Great Water Filters had a representative from WA to help resolve the issue in one visit.
Phone support, ordering additional filters (for showers), and response times are excellent. I recommend them highly!”
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.
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

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.

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.



