Home / Water Guide / Australian Tap Water
A plain-English look at chlorine, disinfection by-products, PFAS, lead and microplastics — what the guidelines actually say, and whether you need a filter.
Australian tap water is among the best-regulated in the world. But "meets the safety standard" and "tastes great with nothing else in it" aren't the same thing. This guide explains what's genuinely in your water, what the rules require, and where a simple point-of-use filter earns its place.
For most people on a mains supply, yes. Australian drinking water is treated and monitored against the Australian Drinking Water Guidelines (ADWG), maintained by the National Health and Medical Research Council (NHMRC). Utilities test continuously and publish results, and the vast majority of supplies meet the guideline values.
Chlorine is added on purpose: it kills waterborne, disease-causing microorganisms and keeps water safe all the way through the pipe network to your home. The ADWG sets a maximum of 5 mg/L of chlorine, although levels measured in distribution systems are normally below 1.2 mg/L.
Chlorine is doing an important job, but it's also the number-one reason people say their water tastes or smells "like a swimming pool". The good news: chlorine is one of the easiest things to remove. An activated carbon filter adsorbs it quickly, which is why filtered water tastes noticeably cleaner and crisper within seconds.
When chlorine reacts with naturally occurring organic matter — decaying leaves and other carbon-based material in source water — it can form compounds called trihalomethanes (THMs) and haloacetic acids. The ADWG sets a maximum of 250 µg/L for total THMs, a limit most metropolitan supplies sit comfortably under.
Carbon filtration that reduces chlorine also helps reduce the conditions that create these by-products at the point of use.
PFAS — sometimes called "forever chemicals" — are a large family of synthetic compounds that break down very slowly. They've been a major focus of recent water policy in Australia.
On 25 June 2025, the NHMRC published updated, stricter PFAS guideline values in the Australian Drinking Water Guidelines, following a public consultation that began in October 2024.
Two points worth keeping in perspective:
If you live in a known PFAS-affected catchment, your water utility is the authoritative source for local testing. For general peace of mind, a quality carbon filter adds a layer of point-of-use reduction.
Treated water leaves the plant clean, but it still travels through your home's plumbing. Older fittings, brass tapware and aged pipes can leach trace amounts of lead and copper, especially in water that's been sitting in the pipes overnight. A simple habit — running the tap briefly each morning — helps, and a point-of-use filter adds protection right where you fill your glass.
Tiny plastic particles are now detected in water supplies worldwide, including bottled water. Research into their long-term health effects is ongoing, but many people prefer to reduce what they consume where they can. A fine carbon-block filter helps capture microplastic particles before they reach your glass.
If your only question is "is it safe?", mains water already clears that bar. People choose a filter for different reasons:
For most households — especially renters — a tap-mounted carbon filter is the simplest, most affordable option. It needs no plumber, comes off cleanly when you move, and turns the water you already pay for into something that tastes genuinely better.
A renter-friendly carbon filter that twists onto your tap and reduces chlorine, sediment and 150+ contaminants in seconds.
See the PureFlow filterSources: Australian Drinking Water Guidelines (NHMRC); NHMRC updated PFAS drinking water guideline values, June 2025. This article is general information, not health advice. For local water quality, consult your water utility's published reports.