Water Filtration
What's Actually In Your Tap Water?
Australian tap water meets safety standards — but 'safe' doesn't always mean 'clean'. Here's what's worth filtering, and how to choose the right system for your home.
See Our Filter Recommendations →The Honest Truth About Tap Water
Tap water in Australia is treated to meet the Australian Drinking Water Guidelines (ADWG) — and by global standards, that's genuinely good. The water coming out of your tap is not going to make you acutely sick.
But 'meets the guidelines' and 'contains nothing worth filtering' are two different things. Treatment processes introduce their own residues. Old infrastructure adds heavy metals. And a category of chemicals called PFAS — used in everything from non-stick cookware to firefighting foam — is now appearing in waterways and catchments that regulators are still working to address.
The case for filtering isn't alarmism. It's the same logic as buying organic when you can — you're reducing the overall load on your body over time.
The 4 Things Most People Filter For
These cover the vast majority of reasons people choose to filter their water in Australia:
Added during treatment to kill bacteria — which it does effectively. The residue affects taste and smell. Long-term exposure to chlorination by-products (called THMs) is an area of ongoing research.
Lead is the main concern — particularly in older homes with lead-soldered pipes. Lead has no safe exposure level for children. If your home was built before 1990, this is worth taking seriously.
Added by most Australian water utilities to support dental health. Some people prefer to reduce their intake and get fluoride through toothpaste instead. Removal requires a specific filter type (reverse osmosis or bone char).
Per- and polyfluoroalkyl substances. Found in food packaging, non-stick coatings, and industrial processes. They accumulate in the body over time. Removal requires activated carbon or reverse osmosis.
The 3 Filter Types That Actually Work
There are dozens of filter products on the market, but they all fall into a few core technologies. Here's a plain-language comparison:
| Filter Type | Best For | Removes Fluoride? | Installation |
|---|---|---|---|
| Activated Carbon (benchtop or under-sink) |
Chlorine, chloramine, VOCs, taste, odour, some heavy metals, PFAS | ✗ No | DIY — no plumber needed |
| Reverse Osmosis (under-sink) |
Everything above + fluoride, nitrates, heavy metals, PFAS, microplastics | ✓ Yes | Under-sink installation, some plumbing |
| Whole-House Filter | Sediment, chlorine, iron — protects plumbing and appliances | ✗ No | Plumber required at mains entry |
"For most households, a quality under-bench activated carbon filter handles the everyday concerns well. If you want to remove fluoride, reverse osmosis is the only reliable residential option."
How To Choose The Right Filter For Your Home
Answer these three questions and you'll have a clear direction:
What do you actually want to remove?
If it's chlorine taste and general peace of mind — a benchtop or under-sink carbon filter does the job. If you want fluoride removed, or you're in an area with known PFAS contamination, you need reverse osmosis. Check your local water utility's annual water quality report — it's public and free.
How much water does your household go through?
Most under-sink carbon filters handle 1,000–3,000 litres before needing a new cartridge. For a household of 4 drinking about 8L a day, that's 125–375 days. Match your filter capacity to your actual usage — a filter you don't replace on schedule is worse than no filter.
Are you renting or do you own?
Renters should stick with benchtop filters — no installation required and they come with you when you move. Owners have the full range of options. If you're planning to stay long-term, an under-sink or whole-house system pays for itself quickly compared to buying bottled water.
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Tested and ranked in Australian conditions. Every article references ADWG standards and Australian product availability.
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