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The purpose of any water filter is to improve water quality by removing unwanted impurities. Our Elite Series 2 is a specialist alkaline water filter system that not only purifies tap water but also returns essential minerals to the water, like calcium and magnesium, after the filtration process.
The result? Great-tasting, odour-free, healthy drinking water that enhances your hydration.

Cartridge Replacements – $195 / Every Year

3 Steps to Pure Water

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Sit back and relax with our easy turnkey solution. Flexible payment options make it simple.

Frozen Price Guarantee

Enjoy peace of mind with our no-fit-no-fee guarantee. Frozen price includes full installation.

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Pay Only Once Installed

No upfront costs, no hidden surprises. You pay only once your system is fully fitted and working.

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Free No-Charge
Installation on New Systems*

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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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Technology Updates

Technology UpdatesAccess the very latest, cutting-edge, breakthrough water filtration technology.

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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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Free 5 Yr Guarantee Extension

Extra Product Grantee Extension from market normally 1 Year to 5 YEARS (Service call outs 2 years)

Under Sink Water Filter Reviews

“Great service and support. Great Water Filters send me an annual reminder when my filters are due, they keep records so I get the right filters at the right time.
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!”

Peter H.27 August 2024

“Quality finishes, water and customer service. From meeting Paul at the Home Expo, to engaging with Levon to help plan and work through all our queries and ultimately to Shannon implementing the system we're delighted with the result and enjoying the filtered water at every tap point in our home...and without loss of pressure. Thanks Great Water Team!”

Yianni S.27 August 2024

“Fantastic experience from start to finish. No pushy sales like the other company we enquired with. We kind of knew what we wanted, and any questions we had were answered honestly and concisely. We’re loving having filtered water throughout the whole house with no noticeable water pressure loss. Thanks for being such a wonderful company to deal with. I have already recommended the whole home filtration system to several of our family and friends”

Christie K.27 August 2024

“Very happy with the quality of the product and the service. We have gone from having dirty, hard water (awful town supply!) to clean water that feels soft after the installation of a whole-house filter. The whole process was quick, taking less than a week from my first approach to Great Water to the filter being installed. The plumber assigned was friendly and professional. A very small amount of seepage we had after installation was fixed within a day after one text message to Great Water. While the price may put some off, we see it as a saving on the jug filters we no longer need to buy, and on the damage the old hard water used to do to the bathroom, kitchen and cars. I would definitely recommend Great Water's household filter system.”

Paul27 August 2024

Compare Our Top Selling Water Filters

ES2 Alkaline & Minerals

Under Sink Alkaline & Mineral Unit

Our Elite Series 2 stands out as a specialized alkaline filter; once the purification process is complete, this advanced system reintroduces all vital minerals back into the water.

No Fluoride Removal
0.25 Micron Filtration
pH Balanced Water
Puts Healthy Minerals Back In

Learn More about ES2

ES3

Reverse Osmosis Water Filter

Our ES3 RO water filter offers the ultimate filtration using the world-famous RO filtration technology; the same trusted technology used for bottled water.

Removes 99% Fluoride
0.0001 Micron Filtration
pH Balanced Water
Puts Healthy Minerals Back In

Learn More about ES3

ES2

Alkaline Water Filter

Our Elite Series 2 stands out as a specialized alkaline filter; once the purification process is complete, this advanced system reintroduces all vital minerals back into the water.

No Fluoride Removal
0.25 Micron Filtration
pH Balanced Water
Puts Healthy Minerals Back In

Learn More about ES2

Compare The Market

Comparing The Two Systems

FEATURES

Great Water ES2

Other Reverse Osmosis Systems

Lead-free European Tap

Built-in Pressure Gauge

pH7+ Balanced Water

Simple Quick Change Cartridges

Returns Essential Minerals

Sanitary Safe

COMPARE THE MARKET

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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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.

Compare Water Filter Systems

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Installation

Cartridge Change

Troubleshooting

Explore Our Water Filter Ranges & Benefits

Discover the unique benefits of each Great Water Filtration System and find the perfect match for your home.
Compare features, filtration capabilities, and the advantages of whole house filters, under sink systems, reverse osmosis, alkaline water filters, and UV water filters — all designed for pure, great-tasting water and long-term protection.

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 whole house water filter in Australia? The ES5Q Whole House Water Filter is one of Australia’s most trusted systems, providing mineral-balanced, crystal-clear water to every tap. Its five-stage filtration removes impurities, softens water, and restores beneficial minerals for healthier hydration and cleaner plumbing.

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.