Yes. Melbourne's water meets Australian Drinking Water Guidelines. But it contains chlorine, fluoride, and trace contaminants — here's what you need to know.
Based on Melbourne Water data · Last updated March 2026
Meets ADWG standards Chlorine-disinfected Fluoridated Very soft water (18 mg/L) PFAS below detection
"Safe" and "what you prefer to drink" aren't always the same thing. Melbourne water contains chlorine, fluoride at 0.7–1.0 mg/L, and trace contaminants. None of these are a health emergency at typical levels, but many people filter them out anyway — for taste, personal preference, or health reasons.
Meets guidelines
Melbourne Water publishes annual drinking water quality reports showing compliance with NHMRC standards under Victoria's Safe Drinking Water Act 2003. All major contaminants tested and reported regularly.
Water sources
Where does Melbourne's water come from?
Melbourne's water supply comes from 10 major reservoirs in the Yarra Ranges and Gippsland catchments — treated at 5 filtration plants and 49 disinfection stations before reaching your tap.
Primary catchment sources
About 59% of Melbourne's water comes from Thomson Reservoir — the largest in the network at 1,068 gigalitres. Melbourne's catchments span the Yarra Ranges, upper Yarra River, and Gippsland. This water is treated at 5 major filtration plants including the Winneke plant which handles the majority of supply.
Thomson Reservoir
1,068 GLEst. 1983
Melbourne's largest reservoir — holds ~59% of the city's total supply. Located in Gippsland, it transfers water via pipeline to Upper Yarra Reservoir.
Cardinia Reservoir
287 GLEst. 1984
A key distribution reservoir in the outer south-east. Receives water from Silvan and can transfer back during high demand.
Upper Yarra Reservoir
200 GLEst. 1957
Receives water from Thomson Dam and feeds Silvan Reservoir. A critical transfer point in the network.
Sugarloaf Reservoir
96 GLEst. 1981
Services Melbourne's north and north-east. Receives water from Maroondah Reservoir and the Yarra River.
Silvan Reservoir
40 GLEst. 1932
Melbourne's central distribution hub in the Dandenong Ranges. Receives water from Upper Yarra and O'Shannassy.
Tarago Reservoir
37.6 GLEst. 1969
Reopened in 2009 after being offline since 1991. Augments Melbourne's supply from the eastern catchment.
Yan Yean Reservoir
30 GLEst. 1857
Melbourne's oldest reservoir — a heritage-listed structure in the northern suburbs. Services the northern corridor.
Greenvale Reservoir
27 GLEst. 1971
Serves Melbourne's western and north-western suburbs. Receives treated water from the Winneke treatment plant.
Maroondah Reservoir
22 GLEst. 1927
A scenic dam in Healesville, surrounded by protected bushland. Transfers water to Sugarloaf Reservoir.
O'Shannassy Reservoir
3 GLEst. 1928
Melbourne's smallest major reservoir on the O'Shannassy River. Transfers water directly to Silvan Reservoir.
Thomson dominates
Thomson Reservoir alone holds approximately 59% of Melbourne's total dam storage capacity (1,068 out of ~1,810 GL total). It's the third-largest reservoir supplying a major Australian city.
Desalination
The Victorian Desalination Plant at Wonthaggi can provide up to 150 GL per year during drought. Seawater is desalinated and blended with reservoir water. This gives Melbourne long-term drought resilience.
Melbourne's water journey
From rainfall in protected catchments to your kitchen tap — here's how Melbourne's water is collected, treated, and delivered.
1
Rainfall
1,570 km²
Rain falls across 1,570 km² of protected native forest catchments in the Yarra Ranges and Gippsland — closed to public access to protect water quality. These feed into the broader 13,000 km² Melbourne Water region.
2
Collection
10 reservoirs
Water flows through natural creeks and rivers into 10 major reservoirs. Thomson alone holds ~59% of Melbourne's total supply at 1,068 gigalitres.
3
Transfer
Pipelines & tunnels
Raw water moves through a network of pipelines, aqueducts, and tunnels spanning 1,300 km to 5 filtration plants across the Melbourne basin. Water transfers between reservoirs via interconnected pipelines.
4
Treatment
5 plants
Multi-barrier treatment: coagulation, flocculation, filtration, chlorine disinfection, UV treatment, pH correction, and fluoridation. The Winneke plant handles the majority of Melbourne's supply.
5
Distribution
1,300+ km
Treated water flows through 1,300 km of distribution mains and 64 service reservoirs, maintained by three retail water companies: Yarra Valley Water, South East Water, and Greater Western Water.
6
Your Tap
5M+ people
Clean drinking water arrives at your kitchen tap. For the best taste and to remove residual chlorine, fluoride, and microplastics — add a Tapp filter as the final step.
Contaminant data
What's actually in Melbourne tap water?
Here are the main parameters Melbourne Water monitors and reports annually:
18mg/L
Average water hardness — Melbourne has Australia's softest major city tap water
Guideline limit: <200 mg/L. Melbourne is well below this threshold.
F⁻
Fluoride
0.7–1.0 mg/L
Cl₂
Chlorine (disinfectant)
0.1–1.8 mg/L
H⁺
Hardness (very soft)
9–38 mg/L
PFAS
PFAS
<2 ng/L (below detection)
Pb
Lead (not added)
Trace leaching only
TDS
Total dissolved solids
~47 mg/L
Note on chlorine: Melbourne uses free chlorine for disinfection, not chloramine. Chlorine is effective but can produce a noticeable taste and smell, especially in warmer months. It also forms disinfection by-products (THMs) which are monitored and kept within guideline limits.
Emerging research
PFAS in Melbourne water (2025 update)
PFAS (per- and polyfluoroalkyl substances) are "forever chemicals" used in non-stick coatings, firefighting foams, and food packaging. They persist in water and bioaccumulate.
Official guideline compliance
Melbourne Water's 2024–2025 testing shows PFAS levels below detection limits (<2 ng/L for PFOS, PFHxS, PFOA, and PFBS). The water is compliant and considered safe from a PFAS perspective.
Ongoing monitoring
While Melbourne's catchments are well protected, PFAS contamination has been identified at certain sites in Victoria (e.g., Fiskville CFA training facility). Melbourne Water continues active monitoring under the Safe Drinking Water Regulations 2025 to ensure PFAS doesn't enter the drinking water supply.
What's being done: Melbourne Water monitors PFAS across its catchments and treatment plants. Victoria's Safe Drinking Water Regulations 2025 (effective July 2025) include updated PFAS monitoring requirements. Melbourne's protected forested catchments provide a natural buffer against PFAS contamination.
For personal filtering: Tappwater's EcoPro Compact and SMR tap filters remove 93% of PFAS via activated carbon nanofiltration. For maximum PFAS removal (99%), the RO Countertop uses reverse osmosis — the most effective consumer technology available.
Water chemistry
Is Melbourne water hard or soft?
Melbourne has very soft water (9–38 mg/L, average hardness of ~20 mg/L — the softest of any major Australian city). For reference:
Soft: 0–60 mg/L (Melbourne falls here — well into soft territory)
Moderately hard: 60–200 mg/L
Hard: >200 mg/L (Adelaide: 150+)
Very soft water is excellent for appliances (virtually no scale buildup), but doesn't mean your water is "pure" — hardness just measures dissolved minerals like calcium and magnesium.
Impact on plumbing
Melbourne's very soft water won't damage pipes or appliances from mineral scale. However, chlorine still affects skin and hair in the shower — which is why shower filters are popular in Melbourne.
Filtration options
Do you need a water filter in Melbourne?
Melbourne's water is safe, but you might filter for taste, chlorine/fluoride removal, or general peace of mind. It depends what you want to remove.
Use this table to compare what each Tappwater filter removes from Melbourne's water:
Contaminant
In Melbourne Water
Compact
SMR
RO Countertop
Chlorine
Chlorine-based
>97%
>99%
>99%
Fluoride
0.7–1.0 mg/L
70%
70%
>99%
PFAS
<2 ng/L (below detection)
93%
93%
99%
Microplastics
Present
>99%
>99%
>99%
Lead
Trace (from pipes)
>95%
>95%
100%
Heavy metals (Hg)
Trace
95%+
95%+
>99%
THMs
Present
>98%
>98%
>99%
TDS reduction
~47 mg/L
—
—
85%
Best for Melbourne
—
Best value
Taste + minerals
Maximum protection
Independently verified lab results
All removal percentages above are from independent testing by SimpleLab (USA), Echevarne (EU), the Austrian Water Institute, and Equinox Labs (Australia). We publish full, unedited results — not cherry-picked numbers.
Yes. Melbourne's water supply meets all Australian Drinking Water Guidelines under Victoria's Safe Drinking Water Act 2003. Tests are conducted regularly and results are published by Melbourne Water and the three retail water companies.
Does Melbourne use chlorine or chloramine?
Chlorine. Melbourne uses free chlorine for disinfection, not chloramine. This is effective but can produce a noticeable taste, especially in warmer months or when water travels long distances through the pipe network.
Is there fluoride in Melbourne water?
Yes, 0.7–1.0 mg/L (added for dental health, with an optimum target of 0.9 mg/L). This falls within NHMRC guidelines. If you want to remove it, reverse osmosis is the only consumer method that works.
Are there PFAS in Melbourne tap water?
Melbourne Water's 2024–2025 testing shows PFAS below detection limits (<2 ng/L). Melbourne's protected forested catchments provide a natural buffer, and monitoring continues under Victoria's updated 2025 regulations.
Is Melbourne water hard or soft?
Very soft (9–38 mg/L, average ~20 mg/L) — the softest of any major Australian city. This is great for appliances and plumbing. Hard water from cities like Perth (~100 mg/L) causes far more scale buildup.
What's the best water filter for Melbourne tap water?
The EcoPro Compact ($109.99) is the best value — removes >97% chlorine, 93% PFAS, 70% fluoride, and >99% microplastics. The EcoPro Chrome SMR™ ($149.99) does the same but adds minerals (calcium, magnesium, potassium) for better taste. The RO Countertop ($799.99) is maximum protection — removes >99% of virtually everything including fluoride, PFAS, and lead.
Sources: Melbourne Water Annual Reports (2024–2025), Yarra Valley Water, South East Water, Greater Western Water, NHMRC Australian Drinking Water Guidelines, Victoria Department of Health, Safe Drinking Water Regulations 2025
