Forest Hill Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
reservoir
pH Level
7.7
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
259.6 mg/L
Est. Daily Cost
A$0.47
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 Forest Hill, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Forest Hill | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.8 yrs | 8.5 yrs | -20% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How Forest Hill compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Forest Hill, Victoria | ≈ 120–179 mg/L | 🟠 Hard | reservoir |
| Vermont, Victoria | ≈ 60–120 mg/L | 🟡 Moderately Hard | reservoir |
| Nunawading, Victoria | ≈ 0–60 mg/L | 🟢 Soft | reservoir |
| Mitcham, Victoria | ≈ 0–60 mg/L | 🟢 Soft | reservoir |
| Vermont South, Victoria | ≈ 60–120 mg/L | 🟡 Moderately Hard | reservoir |
National Benchmark
How Forest Hill compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Forest Hill | ≈ 120–179 mg/L | 🟠 Moderate |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Forest Hill's Water Unique?
Local geology and source profile
Unfortunately, no specific water quality data could be found for Forest Hill, Victoria, Australia. The raw information indicates that the supply is managed by Yarra Valley Water and Melbourne Water, with a notable contribution from the Winneke Water Treatment Plant. This blend results in slightly hard water for residents. It's also mentioned that this supply is harder than adjacent areas like Vermont and Blackburn South, suggesting a greater proportion of water from the Winneke WTP in the Forest Hill distribution zone.
Geologically, the water's hardness is influenced by its source and treatment. The slightly hard classification suggests the water has passed through or originates from areas with mineral content. While specific rock types aren't detailed for Forest Hill itself, the mention of the Winneke Water Treatment Plant implies a connection to sources that contribute to moderate mineral levels, likely dissolved calcium and magnesium, leading to its classification as slightly hard compared to other local sub-zones.
Slightly hard water, like that supplied to Forest Hill, can lead to a buildup of scale in pipes and appliances over time, potentially reducing their efficiency and lifespan. You might notice soap not lathering as easily as you'd expect. Regular cleaning of fixtures and appliances, especially your water heater, can help manage scale. If you find scale buildup to be a persistent issue, a water softener could be considered for your home.
Geology & Source: Melbourne supply; Winneke WTP contribution results in slightly hard water
Other Victoria Water Reports
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