Many Australians use a water filter to improve the taste and smell of their tap water, or to have chilled filtered water on hand. Options range from simple jugs to under-sink systems. This water filter guide explains the main types, what to look for and how to keep filters working well.
What do home water filters do?
Most household filters use activated carbon and other media to reduce things that affect taste and odour, such as chlorine, and some also reduce sediment and certain other substances. What a filter reduces depends on its design, so check the manufacturer's specifications and any certification details for the specific product.
If you have concerns about your water supply, such as tank or bore water, contact your local water authority or council for advice before relying on a filter.
Types of water filters
| Type | How it works | Pros | Things to consider |
|---|---|---|---|
| Filter jug | Water passes through a cartridge in the lid | Affordable, no installation | Small capacity; refill often |
| Dispenser or cask | Larger tank with a tap | Bigger capacity for families | Takes fridge or bench space |
| Benchtop gravity purifier | Large ceramic or plastic tank with filter elements | Big capacity; no plumbing | Bulky |
| Tap-mounted filter | Attaches to your kitchen tap | Filtered water on demand | Doesn't suit every tap |
| Under-sink or inline filter | Connected to the cold water line | Hidden away; high flow | Needs installation |
| Fridge filter | Built into fridges with water dispensers | Chilled filtered water | Only for compatible fridges |
Filter jugs
A filter jug is the easiest way to start. Fill it from the tap, let it filter and keep it in the fridge. Jugs typically hold around 2 to 3.5 litres; larger casks and dispensers can hold 8 litres or more. Some are slim enough to fit in a fridge door.
Tap-mounted filters
These clip onto a standard kitchen tap and usually let you switch between filtered and unfiltered water. Check that the filter fits your tap before buying.
Under-sink and inline systems
Under-sink filters connect to the cold water line and supply filtered water through your existing tap or a separate filter tap. They give higher flow and capacity without taking up bench space. Some systems use multiple stages, and some use reverse osmosis.
Installation: In Australia, connecting a filter to your plumbing usually needs to be done by a licensed plumber. Check the product instructions and local rules.
Fridge filters
If your fridge has a water and ice dispenser, it likely uses a replaceable internal or external filter. Use the filter specified for your fridge model.
Filters to compare
Our water filters range includes BRITA and Stefani jugs, Aquaport filter bottles and tap kits, plus replacement parts for Rippl, Billi and Zip systems. Our inline water filters include BRITA, Rippl and Oliveri under-sink and inline systems, and our fridge accessories include Philips and Stefani products. Every brand we stock is listed on our brands page.
Replacing filters
Filters only work well if you replace them on time. An old cartridge can slow flow and stop reducing the things it was designed to.
| Filter type | Typical replacement |
|---|---|
| Jug cartridge | Around every 4 weeks, or by litres filtered |
| Tap-mounted filter | Every few months, depending on use |
| Under-sink cartridge | Around every 6 to 12 months, depending on system |
| Fridge filter | Around every 6 months, or as the fridge indicates |
Always follow the manufacturer's recommendation. Many jugs and fridges have a reminder indicator.
Running costs
When comparing filters, look beyond the upfront price:
- Cost of replacement cartridges.
- How long each cartridge lasts.
- Installation costs for plumbed systems.
A jug is cheaper to buy, while an under-sink system costs more upfront but may suit a household that drinks a lot of water. Prices vary widely, so check current cartridge prices before you decide.
Choosing the right filter
- Renters: A jug, dispenser or tap-mounted filter needs no plumbing changes.
- Families: A large dispenser or an under-sink system.
- Small fridges: A slim jug that fits the door.
- New kitchen or renovation: Plan for an under-sink system and filter tap.
- Fridge with dispenser: Keep the right replacement filter on hand.
Sparkling water at home
If your household drinks a lot of bubbly water, a soda maker paired with filtered water is a popular option. Our soda makers include SodaStream, SodaKING, Smeg, Breville and Philips models. Check the gas cylinder exchange options before buying.
Caring for your filter
- Rinse or soak new cartridges as the instructions say before first use.
- Wash jugs regularly in warm soapy water (check if dishwasher-safe).
- Keep jugs in the fridge, out of direct sunlight.
- Don't filter hot water unless the product says it's suitable.
- Note the replacement date on your calendar.
Water pressure and flow
A slow filter tap may simply need a new cartridge. If your whole kitchen tap is slow, see our low water pressure fixes guide.
Fridge space
If you're buying a new fridge, consider whether you want a built-in dispenser or prefer a jug. See our fridge buying guide. For keeping the kitchen tidy, read our kitchen storage ideas.
Related guides: Fridge Buying Guide, Low Water Pressure? Common Causes and How to Fix Them, Kitchen Storage.
Frequently asked questions
How often should I change my water filter?
Jug cartridges are often replaced around every 4 weeks, and under-sink cartridges around every 6 to 12 months, but always follow the manufacturer's guidance.
Do I need a plumber to install a water filter?
Jugs and most tap-mounted filters don't need a plumber, but filters connected to your plumbing usually need a licensed plumber in Australia.
What does a water filter remove?
It depends on the filter. Many reduce chlorine taste and odour, and some reduce sediment and other substances. Check the product specifications and certification.
Can I filter tank water?
Some systems are designed for it, but tank water can have different issues. Get advice from your local council or a water specialist first.
