Mentone Water Hardness & Quality Report (2026)
Water Hardness
Source
reservoir
pH Level
7.5
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
159.2 mg/L
Est. Daily Cost
A$0.24
energy & soap waste
Source: BOM National Performance Report & ADWG · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Mentone, your appliances are currently losing 10% efficiency due to mineral buildup.
| Appliance | In Mentone | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.1 yrs | 8.5 yrs | -16% |
| Washing Machine | 10.8 yrs | 12 yrs | -10% |
| Water Heater | 12.6 yrs | 15 yrs | -16% |
Regional Water Comparison
How Mentone compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Mentone, Victoria | 76 mg/L | 🟡 Moderately Hard | reservoir |
| Parkdale, Victoria | 113 mg/L | 🟡 Moderately Hard | reservoir |
| Cheltenham, Victoria | 97.5 mg/L | 🟡 Moderately Hard | reservoir |
| Beaumaris, Victoria | 90 mg/L | 🟡 Moderately Hard | reservoir |
| Highett, Victoria | 85 mg/L | 🟡 Moderately Hard | reservoir |
National Benchmark
How Mentone compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Mentone | 76 mg/L | 🟡 Low |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Mentone's Water Unique?
Local geology and source profile
Mentone's drinking water is supplied by South East Water as water retailer, with bulk supply from Melbourne Water incorporating a moderate Winneke Water Treatment Plant contribution for the Kingston City LGA inner southern coastal Melbourne distribution in Victoria. Water hardness in Mentone is measured at 76 mg/L — classified as slightly hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Mentone, in the Kingston City LGA — a well-regarded inner southern Melbourne beach suburb known for the Mentone Beach and foreshore parkland, the charming Mentone Village shopping strip on Como Parade West, the Mentone railway station heritage precinct, and the lifestyle of the Bayside coastal corridor adjacent to Parkdale and Mordialloc — receives slightly elevated supply softer than the Clayton South inland sub-zone (93 mg/L) in the same Kingston City LGA.
Mentone's slightly elevated hardness reflects a moderate Winneke Water Treatment Plant fraction at the inner southern Kingston City coastal distribution sub-zone. The Winneke plant draws from the Yarra River at Yering Gorge traversing Devonian basalt terrain — contributing moderate calcium relative to the soft Yarra Ranges direct reservoir supply. The Mentone inner southern Kingston coastal distribution at 76 mg/L and TDS 159.2 mg/L receives a moderate Winneke blending proportion in South East Water's inner southern Melbourne distribution network, consistent with the slightly hard character of the inner southern Kingston coastal supply zone.
Mentone residents can expect occasional moderate limescale on taps and in kettles — descaling every two to three months is typically adequate. Hot water systems benefit from periodic inspection. The elevated lead reading (0.003 mg/L) warrants briefly running the cold tap before use in older Mentone properties near the heritage precinct. South East Water provides water quality information at southeastwater.com.au, with all ADWG health standards consistently met. Mentone's Bayside coastal community and Mentone Village retail strip benefit from a safe supply meeting all ADWG standards.
Geology & Source: Supplied by South East Water (water retailer) and Melbourne Water (wholesale) incorporating a moderate Winneke Water Treatment Plant contribution — the Mentone Kingston inner southern coastal Melbourne supply carries slightly hard water at 76 mg/L, consistent with a moderate Winneke WTP fraction at this inner southern coastal Kingston Melbourne distribution sub-zone, softer than Clayton South (93 mg/L) in the same Kingston City LGA.