Can You Test Your Own Water for PFAS?
Most people asking this question have already read something alarming — a news report about PFAS in a local catchment, an update to the Australian Drinking Water Guidelines, or a study linking forever chemicals to health outcomes. They want to know if their water is affected, and they want to know what they can actually do about it.
The short answer is yes, you can test your water for PFAS. But the method matters significantly — and most of what is marketed as a "PFAS test" will not give you a result you can rely on.
Why home test strips don't work for PFAS
PFAS are not like lead or nitrate. They do not change the colour, taste, or smell of water. They cannot be detected by any visual or chemical indicator at the concentrations that matter for health.
The Australian Drinking Water Guidelines specify acceptable limits for PFAS compounds in the range of 0.008 to 1.0 micrograms per litre — that is, parts per billion, or in some cases parts per trillion. To put that in context: detecting PFAS at guideline concentrations is roughly equivalent to identifying a single drop of water dissolved in 20 Olympic-sized swimming pools.
No home test strip or field kit can achieve this. The sensitivity simply does not exist in those formats. Any product claiming to screen for PFAS without laboratory-grade instrumentation is either detecting at concentrations far above the level of concern — meaning it will miss most real-world contamination — or the claims are not substantiated.
What accurate PFAS testing actually requires
Reliable PFAS analysis requires liquid chromatography coupled with tandem mass spectrometry — LC-MS/MS — conducted in a controlled laboratory environment. This is the same methodology used by Sydney Water, Melbourne Water, and Icon Water to monitor their own supply networks, and the same methodology required by Australian regulators for compliance-grade results.
Key specifications for a credible PFAS test:
NATA accreditation — the National Association of Testing Authorities accreditation is Australia's certification standard for laboratory competence. Results from a NATA-accredited laboratory are the only results recognised by regulators and public health authorities
Detection limits at or below guideline values — the laboratory must be capable of detecting PFAS compounds at concentrations below the 2025 ADWG limits. A result that only detects contamination above the guideline level is not useful
A comprehensive compound panel — PFAS is a class of over 4,000 chemicals. The most relevant for drinking water assessment include PFOS, PFOA, PFHxS, PFBS, PFNA, and a range of precursor compounds. A test covering only three or four compounds will miss a significant portion of the contamination picture.
Where does PFAS come from in Australian drinking water?
Understanding the risk profile for your specific location is relevant context before testing.
Airports and defence facilities are the primary high-risk sites. Aqueous film-forming foam (AFFF) used in firefighting training and emergency response contains high concentrations of PFOS and PFOA. These compounds have migrated into groundwater and surface water catchments around airports and military bases across the country — in some cases, kilometres from the original source.
Industrial sites and manufacturing — PFAS have been used in a broad range of industrial processes including metal plating, semiconductor manufacturing, paper and textile treatment, and the production of fluoropolymers. Sites with historical industrial activity represent a diffuse contamination source across many urban catchments.
Urban catchment accumulation — PFAS from consumer products, stormwater runoff, and wastewater treatment plant discharge accumulate progressively in catchments. A recent study published in ScienceDirect detected 31 of 50 monitored PFAS compounds in Sydney tap water samples, including compounds not previously reported in Australian drinking water.
The 2025 ADWG update — in June 2025, the NHMRC updated health-based guideline values for PFAS in Australian drinking water. The new limits for PFOS (0.008 µg/L) and PFHxS (0.03 µg/L) represent a significant tightening from previous values. Water that met the prior guidelines may no longer meet the current standard — making testing against current limits relevant even for households that tested previously.
Who should consider testing for PFAS?
PFAS contamination does not announce itself. Water can be within aesthetic guidelines — clear, odourless, normal-tasting — while containing PFAS at concentrations of concern. Testing is particularly relevant if:
Your property is within 10–15 kilometres of an airport, RAAF base, or historical industrial site
You are in a catchment area that has been the subject of state government or media PFAS investigation
You have young children or are pregnant — PFAS bioaccumulate and early-life exposure is of greatest concern
You have been using the same unmonitored water source for an extended period without testing
You are purchasing a property and want to establish a baseline for the supply
It is also worth noting that utility testing — the results published by Sydney Water, Melbourne Water, or your local provider — reflects the water quality at the treatment plant output or the distribution network. It does not reflect what arrives at your specific tap, particularly if you have older plumbing, a private tank connected to the mains, or any point-of-use treatment system.
What happens after testing?
If your results show PFAS concentrations below guideline values, that is a documented baseline — useful for tracking any future changes and for peace of mind.
If your results show concentrations at or above guideline values, the appropriate response depends on the specific compounds detected and the concentrations involved. In most cases the first step is engaging a water treatment specialist to assess filtration options — reverse osmosis and activated carbon filtration are the most commonly used treatment approaches for PFAS, though their effectiveness varies by compound and system design. A baseline test result tells you exactly which compounds you are treating for and at what concentrations, which is the necessary starting point for any treatment decision.
How to test your water for PFAS in Australia
A NATA-accredited mail-order PFAS water test involves three steps: receiving a sampling kit, collecting a water sample from your tap using the supplied bottles and instructions, and returning the sample via pre-paid express post for laboratory analysis. Results are typically returned within 5–7 business days of the laboratory receiving the sample.
Safe Water Lab offers PFAS screening as part of our Complete City Water Test and Complete Water Audit — both of which screen for 30 PFAS compounds including PFOS, PFOA, PFHxS, PFNA, and 26 precursor compounds, benchmarked against the 2025 ADWG. For those specifically concerned about PFAS as a standalone test, our PFAS Screen — 30 Compounds covers the full compound panel without the broader chemistry suite.
For an overview of all contaminants relevant to city and mains water supplies, including PFAS, heavy metals, disinfection by-products, and industrial solvents, see our city and mains water testing guide.
Safe Water Lab provides NATA-accredited mail-order water testing across Australia (Accreditation No. 1261). All PFAS results are benchmarked against the June 2025 Australian Drinking Water Guidelines. View city water testing kits →