Vermont South Water Hardness & Quality Report (2026)
Water Hardness
~60–119 mg/L
Moderately Hardestimated · not lab-verified
Source
reservoir
pH Level
7.2
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
150.9 mg/L
Est. Daily Cost
A$0.28
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 Vermont South, your appliances are currently losing 12% efficiency due to mineral buildup.
| Appliance | In Vermont South | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.5 yrs | 8.5 yrs | -12% |
| Washing Machine | 10.6 yrs | 12 yrs | -12% |
| Water Heater | 13.2 yrs | 15 yrs | -12% |
Regional Water Comparison
How Vermont South compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Vermont South, Victoria | ≈ 60–119 mg/L | 🟡 Moderately Hard | reservoir |
| Forest Hill, Victoria | ≈ 120–179 mg/L | 🟠 Hard | reservoir |
| Vermont, Victoria | ≈ 60–120 mg/L | 🟡 Moderately Hard | reservoir |
| Glen Waverley, Victoria | ≈ 0–60 mg/L | 🟢 Soft | reservoir |
| Blackburn South, Victoria | ≈ 60–120 mg/L | 🟡 Moderately Hard | reservoir |
National Benchmark
How Vermont South compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Vermont South | ≈ 60–119 mg/L | 🟡 Low |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Vermont South's Water Unique?
Local geology and source profile
Vermont South, a suburb in Melbourne's outer east, receives its water supply primarily through Yarra Valley Water and Melbourne Water. The main sources are the Thomson Reservoir and the Upper Yarra catchment, with minimal input from the Winneke Water Treatment Plant. This direct supply route contributes to the water being exceptionally soft, featuring very low total dissolved solids (TDS). It stands out as one of the softest urban water supplies within the greater Melbourne area, according to available data.
The geological makeup of the region influences the water's character. The supply originates from catchments feeding into the Thomson Reservoir and Upper Yarra. These areas are known for their geology, which results in water that is very soft and contains minimal dissolved minerals. This geological context is the primary reason for the low TDS and the overall softness of the water delivered to Vermont South residents.
This very soft water means you'll likely notice less scale buildup on your appliances, such as kettles and coffee makers. Soap and detergent will lather more easily, potentially allowing you to use less product. While generally beneficial for plumbing and appliances, its softness might mean you don't get the mineral taste some people prefer. If you're accustomed to harder water, you might consider a water softener for a different feel, though it's not typically necessary for protecting your home's systems from mineral damage.
Geology & Source: Yarra Valley Water and Melbourne Water supply; Thomson Reservoir and Upper Yarra catchment; soft water; near-zero TDS
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