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Water Filtration

Choose an under-sink, reverse osmosis or whole-home water filter, supplied and installed across most of Sydney metro.

More about these systemsLess

Compare under-sink filter systems from Stefani: single-stage and triple-stage cartridge models or five-stage reverse osmosis. Filter Systems Australia also lists a seven-stage complete bundle. Check each product’s dimensions and the tap, tank and fittings included.

Already have your filter? Our under-sink water filter installation service in Sydney covers cartridge and reverse-osmosis systems. It includes the cold-water connection, fitting a filter tap where supplied, flushing and leak testing.

Under-sink systems serve a drinking-water tap; reverse osmosis models also need their specified waste connection and space for any separate tank. Whole-home systems are fitted at the incoming supply, so confirm the installation point and outlets to be treated. Our under-sink versus whole-house comparison explains the two approaches. Compare each model’s dimensions, replacement cartridges and installation requirements.

Supplied-product totals include the system and standard installation; Bring Your Own services cover installation only. Compare under-sink filter installation costs, browse Filter Systems Australia models, or check water filter installation services and scope. Before the visit, use the under-sink installation checklist.

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Every system here is supplied and installed by our own licensed plumber (Lic. 498555C).

Already have an under-sink filter?Installation only$230

Bring Your Own Under-Sink Filter
$230.00 installation only

Installation only

Filter Install +$230.00

Installed incl. GST $230.00

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Bring Your Own Whole-Home System
$480.00 installation only

Installation only

Whole-Home Install +$480.00

Installed incl. GST $480.00

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7 Stage High Alkaline Hydrogen-Rich Undersink Reverse Osmosis System — Complete Bundle
Recommended retail price: $694.00.Our price: $634.00. incl. GST

Supplied & installed

Filter Install +$200.00

Total incl. GST $834.00

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Stefani Single Stage Undersink Water Filtration System – Lead Free
$124.00 incl. GST

Supplied & installed

Filter Install +$200.00

Total incl. GST $324.00

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Stefani Triple Stage Undersink Water Filtration System
$187.00 incl. GST

Supplied & installed

Filter Install +$200.00

Total incl. GST $387.00

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Stefani Undercounter 5 Stage Reverse Osmosis System
$624.00 incl. GST

Supplied & installed

Filter Install +$200.00

Total incl. GST $824.00

Add to cart
4 Stage Under Sink Reverse Osmosis Water Filter System
Ordered in for you, arrives in 5–10 days $584.00 incl. GST

Supplied & installed

Filter Install +$200.00

Total incl. GST $784.00

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4 Stage Undersink Reverse Osmosis Water Filter System with Coconut Carbon Post-Filter
Ordered in for you, arrives in 5–10 days $559.00 incl. GST

Supplied & installed

Filter Install +$200.00

Total incl. GST $759.00

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5 Stage Alkaline Undersink Reverse Osmosis Water Filter System
Ordered in for you, arrives in 5–10 days $599.00 incl. GST

Supplied & installed

Filter Install +$200.00

Total incl. GST $799.00

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5-Stage Quick-Change Alkaline High Performance | Under Sink Reverse Osmosis Water Filter System
Ordered in for you, arrives in 5–10 days $829.00 incl. GST

Supplied & installed

Filter Install +$200.00

Total incl. GST $1,029.00

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7 Stage High Alkaline Magnesium & Hydrogen-Rich Undersink Reverse Osmosis Water Filter System
Ordered in for you, arrives in 5–10 days $694.00 incl. GST

Supplied & installed

Filter Install +$200.00

Total incl. GST $894.00

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High Performance | Triple Whole House Water Filter System with Stainless Steel Enclosure (HPF-3)
Ordered in for you, arrives in 5–10 days $1,829.00 incl. GST

Supplied & installed

Whole-Home Install +$480.00

Total incl. GST $2,309.00

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ScaleSoft® Triple Whole House Hard Water & Chlorine Reduction Filter System| 20″ x 4.5″ High Flow | WaterMark (GT1-108-SS)
Ordered in for you, arrives in 5–10 days $1,030.00 incl. GST

Supplied & installed

Whole-Home Install +$480.00

Total incl. GST $1,510.00

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Single Whole House Water Filter System | 10″x 4.5″ for Small Households | Watermark Certified (GT1-6W)
Ordered in for you, arrives in 5–10 days $147.00 incl. GST

Supplied & installed

Whole-Home Install +$480.00

Total incl. GST $627.00

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Single Whole House Water Filter System | 20″ x 4.5″ High Flow | Watermark Certified (GT1-8WM)
Ordered in for you, arrives in 5–10 days $198.00 incl. GST

Supplied & installed

Whole-Home Install +$480.00

Total incl. GST $678.00

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Smart Monitor 5-Stage Undersink Reverse Osmosis System
Ordered in for you, arrives in 5–10 days $1,349.00 incl. GST

Supplied & installed

Filter Install +$200.00

Total incl. GST $1,549.00

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Triple Whole House Water Filter System | 10″ x 4.5″ for Small Households | WaterMark Certified (GT1-7TWM)
Ordered in for you, arrives in 5–10 days $503.00 incl. GST

Supplied & installed

Whole-Home Install +$480.00

Total incl. GST $983.00

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Triple Whole House Water Filter System | 20″ x 4.5″ High Flow | Watermark Certified (GT1-9TWM)
Ordered in for you, arrives in 5–10 days $646.00 incl. GST

Supplied & installed

Whole-Home Install +$480.00

Total incl. GST $1,126.00

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Twin Whole House Water Filter System | 10″ x 4.5″ for Small Households | WaterMark Certified (GT1-7WM)
Ordered in for you, arrives in 5–10 days $311.00 incl. GST

Supplied & installed

Whole-Home Install +$480.00

Total incl. GST $791.00

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Twin Whole House Water Filter System | 20″ x 4.5″ High Flow System | WaterMark Certified (GT1-9WM)
Ordered in for you, arrives in 5–10 days $396.00 incl. GST

Supplied & installed

Whole-Home Install +$480.00

Total incl. GST $876.00

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Undersink 3 Stage Alkaline Reverse Osmosis Water Filter System
Ordered in for you, arrives in 5–10 days $664.00 incl. GST

Supplied & installed

Filter Install +$200.00

Total incl. GST $864.00

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WaterMark Slim Design Twin Water Filter System | 20″ x 2.5″ (GT1-80)
Ordered in for you, arrives in 5–10 days $186.00 incl. GST

Supplied & installed

Whole-Home Install +$480.00

Total incl. GST $666.00

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WaterMark Triple Whole House Water Filter System 20″ x 2.5″ (GT1-80T)
Ordered in for you, arrives in 5–10 days $299.00 incl. GST

Supplied & installed

Whole-Home Install +$480.00

Total incl. GST $779.00

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Why a licensed plumber mattersNSW licensing rules and our 12-month workmanship warranty

Before you choose

Under-sink filter installation cost guideCompare installation for a supplied system or one you already own.
Reverse osmosis buying guideCompare stages, tank layouts and live installed totals.
Under Sink vs Whole House Water Filter for Sydney HomesSydney's tap water is treated and tested to national guidelines — the real case for filtering is chlorine, sediment and your own pipes. How under-sink, reverse osmosis and whole-home systems compare, what each one fixes and what installation costs.