LocalDataPoint

Forest Hill Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · 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

hard~120–179 mg/LHard · est.

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.

ApplianceIn Forest HillSoft Water CityEfficiency 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

CityHardnessRiskSource
Forest Hill, Victoria≈ 120–179 mg/L🟠 Hardreservoir
Vermont, Victoria≈ 60–120 mg/L🟡 Moderately Hardreservoir
Nunawading, Victoria≈ 0–60 mg/L🟢 Softreservoir
Mitcham, Victoria≈ 0–60 mg/L🟢 Softreservoir
Vermont South, Victoria≈ 60–120 mg/L🟡 Moderately Hardreservoir

National Benchmark

How Forest Hill compares to the Australia average

BenchmarkHardnessAppliance Risk
Forest Hill≈ 120–179 mg/L🟠 Moderate
Australia National Avg125 mg/L🟠 Moderate
Boronia Top Rated5 mg/L🟢 None

Bring Boronia-quality water to your Forest Hill home

Shop water softeners on Amazon.com

Shop Now

What Makes Forest Hill's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 259.6 mg/LpH: 7.7

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

Report an Issue

Notice an error or missing data? Help us keep this page accurate. If you spot incorrect water hardness, outdated utility info, or missing details, please let us know.

All reports are reviewed by our team. Thank you for supporting data quality!

Contact Us

Frequently Asked Questions

Is Forest Hill's water safe to drink?
Yes. Forest Hill's water meets all federal safety standards. The hardness is ≈ 120–179 mg/L (Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.
Do I need a water softener in Forest Hill?
At ≈ 120–179 mg/L (Hard), Forest Hill's water will cause significant limescale on kettles, washing machines, and water heaters. A water softener or descaler is strongly recommended to extend appliance lifespan and reduce energy bills by up to 20%.
How does Forest Hill compare to the Australia average?
The Australia national average is 125 mg/L. Forest Hill (≈ 120–179 mg/L) is 25 mg/L above the national average. The softest major city is Boronia at just 5 mg/L.