Kurunjang Water Hardness & Quality Report (2026)

Water Hardness

moderately hard

~60–119 mg/L

Moderately Hard

estimated · not lab-verified

Source

reservoir

pH Level

7.4

neutral = 7.0

Lead

0.004 mg/L

✓ Below action level

TDS

158.3 mg/L

Est. Daily Cost

A$0.28

energy & soap waste

Source: BOM National Performance Report & ADWG · Updated 2026

moderately hard~60–119 mg/LModerately Hard · 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 Kurunjang, your appliances are currently losing 12% efficiency due to mineral buildup.

Appliance	In Kurunjang	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 Kurunjang compares to its nearest neighbours

City	Hardness	Risk	Source
▶ Kurunjang, Victoria	≈ 60–119 mg/L	🟡 Moderately Hard	reservoir
Melton South, Victoria	≈ 0–60 mg/L	🟢 Soft	reservoir
Brookfield, Victoria	≈ 0–60 mg/L	🟢 Soft	reservoir
Hillside, Victoria	5.5 mg/L	🟢 Soft	reservoir
Caroline Springs, Victoria	≈ 0–60 mg/L	🟢 Soft	reservoir

National Benchmark

How Kurunjang compares to the Australia average

Benchmark	Hardness	Appliance Risk
▶ Kurunjang	≈ 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 Kurunjang's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 158.3 mg/LpH: 7.4

Kurunjang's drinking water comes from Melbourne Water, which sources it from the Maroondah and O'Shannassy Reservoirs in the Yarra River catchment. The Wonthaggi Desalination Plant also contributes, along with some groundwater. After treatment at the Winneke Water Treatment Plant, the water is distributed to the more than 2,500 residents of Kurunjang by Western Water. The Yarra River closed catchment, part of the Great Dividing Range, is the origin, featuring Ordovician bedrock of the Melbourne Formation and overlying Tertiary volcanics. This natural landscape allows alkaline earth metals to leach from weathered siltstones, sandstones, and basalts, resulting in moderately mineralised water. Blending with desalinated water also helps moderate the mineral content.

Geology & Source: Ordovician siltstones and sandstones; Quaternary basalts and alluvial sediments; moderate mineralisation from calcium and magnesium ion dissolution

Other Victoria Water Reports

Melton South

≈ 0–60 mg/L

🟢 Soft

Brookfield

≈ 0–60 mg/L

🟢 Soft

Hillside

5.5 mg/L

🟢 Soft

Caroline Springs

≈ 0–60 mg/L

🟢 Soft

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Frequently Asked Questions

Is Kurunjang's water safe to drink?

Yes. Kurunjang's water meets all federal safety standards. The hardness is ≈ 60–119 mg/L (Moderately Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Kurunjang?

Kurunjang's water is moderately hard at ≈ 60–119 mg/L. A water softener is generally not necessary, though a carbon filter can improve taste and remove any remaining chlorine.

How does Kurunjang compare to the Australia average?

The Australia national average is 125 mg/L. Kurunjang (≈ 60–119 mg/L) is 35 mg/L below the national average. The softest major city is Boronia at just 5 mg/L.