Water quality across Western Australia

Much of Perth's scheme water comes from rainfall-independent sources, with desalinated seawater and groundwater making up most of the supply.

Some groundwater supplies are naturally higher in calcium and magnesium, which can lead to scale. Water is also disinfected to keep it safe as it travels through the network, which some households notice as a chlorine taste or smell.


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  • Perth

    Perth blends desalinated seawater and groundwater, and some northern suburbs have harder water that can leave scale on tapware. Explore whole home filtration in Perth.

  • Mandurah

    Mandurah receives a changing blend of groundwater and desalinated water from Binningup, so its taste and clarity can vary. Explore whole home filtration in Mandurah.

  • Bunbury

    Bunbury draws on the deep Yarragadee aquifer, where naturally occurring iron can affect water taste and colour. Explore whole home filtration in Bunbury.

  • Yanchep

    Yanchep's groundwater has naturally high hardness, with calcium and magnesium contributing to scale. Explore whole home filtration in Yanchep.

Perth water quality

Perth’s Integrated Water Supply Scheme (IWSS) relies on deep groundwater aquifers and desalinated seawater. Delivered by the Water Corporation, this bulk supply pumps water over long distances to serve the metro area. 

While fully compliant with health standards, calcium from local limestone creates stubborn limescale on taps and shower screens, while network chlorination leaves a chemical taste and smell at the tap. 

A shot of Optus Stadium and Matagarup Bridge at sunset.

Bunbury water quality

Managed by Aqwest, Bunbury’s drinking water is drawn entirely from deep Yarragadee groundwater aquifers. Extracted via local borefields, this source provides an independent supply that avoids surface dams and desalination. 

While naturally soft, this underground water undergoes oxidation and chlorination to filter out dissolved iron, leaving residual smells, chemical tastes and fine mineral sediment in household lines. 

A sunset shot of Bunbury.

Mandurah water quality

Mandurah and the Peel region are supplied by a fluctuating blend of groundwater and desalinated water. At the end of the IWSS network, the grid shifts between aquifers and the Southern Seawater Desalination Plant at Binningup. 

This seasonal shifting results in variable water clarity, taste variations and chlorine treatment needed to move water through regional distribution networks. 

An aerial shot of Mandurah's parks and recreation facilities.

Yanchep water quality

Managed by the Water Corporation, Yanchep’s water is supplied through a local groundwater network, with bores drawing from the groundwater system before water is treated and distributed through the area.

This groundwater is naturally hard, with high levels of calcium and magnesium contributing to limescale and spots on taps, shower screens and other wet surfaces. Chlorination provides ongoing disinfection through the supply network, but can also contribute to the taste and smell noticeable at the tap.

A sunset shot of Bunbury.

Don’t see your area?

Not seeing your city listed doesn’t mean we can’t help! Contact Complete Home Filtration to find out whether our whole home water filtration services are available in your area and discuss your water filtration needs with our team. 

Service technician holding a filter while speaking to a man in his front yard.

Whole Home Water Filtration Whole Home Water Filtration: Premium whole home filtration, made for Australia

Complete Home Filtration’s whole home water filtration system is perfectly designed to handle the unique water needs of Australian households, eliminating the need for other water filters.


  • Limescale and home protection

    Dissolved calcium can leave white marks on tapware, fog shower screens and build up inside hot water systems. In harder water areas, the right system can help reduce this scale.

  • Chlorine and taste

    Strip out heavy chlorine dosing and chemical tastes required to transport water safely across vast suburban pipe networks and shifting seasonal supply lines.

  • Environmental impact

    Cut reliance on single-use plastic bottles while eliminating the severe calcium buildup that forces heavy, acid-based chemical cleaners on bathroom fixtures.

  • Softer skin and hair

    Remove harsh disinfection chemicals at the point of entry before hot steam off-gasses in the shower, helping prevent dry skin and preserve your hair's natural moisture.

  • A solution for every home

    Whole-home water filtration system unit

    Whole home filtration

    Upgrade every tap with a Complete Home Filtration whole home system. Treating all water at entry, our tailored systems deliver cleaner, better quality water for drinking, cooking and bathing, providing consistent, reliable filtration without relying on point-of-use filters or bottled water.

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    Reverse osmosis water filtration system.

    Reverse osmosis systems

    Complete Home Filtration Reverse Osmosis filtration systems combine multi-stage carbon and sediment filtration with an ultra-fine, semipermeable membrane to reduce dissolved salts, heavy metals, fluoride, pharmaceuticals and other contaminants that can pass through broader water filtration systems.

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    Rainwater water filtration system

    Rainwater filtration

    Rainwater filtration systems are designed to handle the unique challenges of tank water. High-capacity sediment filtration combined with UV disinfection helps deliver fresh, natural rainwater with the safety and consistency you expect for everyday use.

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    The best filtration system is one that suits your water, your home and your family. A free in-home water assessment allows us to test your water supply, understand your home’s requirements and design the right solution from the start.
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    Service coverage across Western Australia

    While Western Australia’s water utilities (including Water Corporation and regional providers like Aqwest and Busselton Water) operate under regulations enforced by the Department of Health WA, what comes out of your tap depends on infrastructure and location. 

    To transport water across massive distances and hot coastal corridors, utilities rely on continuous chlorination. At the same time, supply sources can shift dramatically, blending desalinated seawater with shallow groundwater and deep subterranean aquifers. Water drawn from coastal limestone carries lots of calcium, while deep regional aquifers introduce iron, manganese and varying mineral profiles. 

    That’s why nearly 17,000 Western Australian homes rely on Complete Home Filtration systems. Our setups target WA’s specific water concerns, removing chlorination before hot showers, filtering fine aquifer sediment, and protecting plumbing from persistent limescale. 

    We don't just drop a box on your doorstep and leave you to it; our local team will assess your water supply, install and fine-tune the setup for your home and stand by for ongoing filter maintenance so you never even have to think about it. 

    Multiple WaterMark-certified water filters

    Installation in Western Australia

    Getting started is seamless. When you submit your details below, our Perth team reaches out to go over your property and identify the specific pain points you want addressed. 

    Next, a Western Australian specialist will review your incoming water line, available space, and household flow demands to design the exact system and filter setup for your home. 

    A licensed WA plumber then installs your system on the main line, with our local team handling ongoing filter servicing and support long after installation. 

    Whole-home water filtration system installed in a front yard

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