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Water Filters & Purifiers

8 STAGE WATER FILTERS

large-blue-stripe-porcelain-water-dispenser-bottle-set-water-filter

Bottle Set w/ Filter

Awesome Ceramic Dome Filter

97% Fluoride Removal Ceramic Filter

Awesome Magnesium Prill Beads

Whole House Water Filters in Australia: A Buyer’s Guide

July 17, 2021 2 min read

A whole house water filter connects to your main water supply line and treats all the water entering your home — every tap, shower, and appliance. Here’s a practical guide to choosing the right system for an Australian home.

Browse our whole house filter range or see our full Whole House Water Filters Guide.

Step 1: Know Your Water Source

Town Water

Australian municipal water is treated with chlorine or chloramines and may contain fluoride, sediment, and disinfection by-products. A twin Big Blue system (sediment + carbon) addresses the main concerns for most town water households.

Bore or Tank Water

May contain bacteria, iron, sediment, and other contaminants not present in town water. Requires more comprehensive filtration — typically sediment + carbon + UV sterilisation as a minimum. A water quality test is strongly recommended before choosing a system.

Step 2: Choose the Right System Type

System	Best For	Approx. Cost
Single stage (sediment or carbon)	Basic pre-filtration	$150–$300
Twin Big Blue (sediment + carbon)	Most Australian town water homes	$300–$600
Triple stage Big Blue	Larger homes, bore/tank water	$500–$900
With UV sterilisation	Bore/tank water with bacteria risk	$800–$2,000

Step 3: Check Flow Rate

Flow rate (measured in litres per minute or gallons per minute) determines whether the system can keep up with your household’s peak water demand without pressure drop. As a guide:

1–2 person household: 30–60 L/min (8–15 GPM)
3–4 person household: 60–80 L/min (15–20 GPM)
5+ person household: 80+ L/min (20+ GPM)

Big Blue 10" x 4.5" housings handle higher flow rates than slim-line housings and are the standard choice for Australian family homes.

Step 4: Consider Filter Life and Maintenance

Cartridge replacement frequency depends on your water quality and household usage:

Sediment cartridge: every 2–6 months
Carbon cartridge: every 4–6 months
Annual cartridge cost (twin system): approximately $80–$200

Cartridge changes are a straightforward DIY task — no plumber required. See our guide: How to Replace a Water Filter Cartridge. Browse our replacement cartridge range.

Frequently Asked Questions

Do I need a plumber to install a whole house water filter?

For most Australian homes with accessible plumbing, a twin Big Blue system is a manageable DIY installation. See our step-by-step guide: Whole House Water Filter Installation Guide. More complex installations (copper pipe, difficult access) benefit from a licensed plumber.

What size whole house filter do I need?

For most Australian family homes, a 10" x 4.5" Big Blue twin system is the right size. Larger homes or high-sediment water supplies may benefit from 20" housings for longer cartridge life. Call us on 1800 789 781 for a recommendation.

How much does a whole house water filter cost in Australia?

System cost ranges from $150 for a basic single-stage unit to $900+ for a triple-stage Big Blue system. See our full breakdown: Whole House Water Filter Cost in Australia.

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