Dandenong North Water Hardness & Quality Report (2026)
Water Hardness
~0–59 mg/L
Softestimated · not lab-verified
Source
reservoir
pH Level
7
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
54.6 mg/L
Est. Daily Cost
A$0.10
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 Dandenong North, your appliances are currently losing 4% efficiency due to mineral buildup.
| Appliance | In Dandenong North | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.2 yrs | 8.5 yrs | -4% |
| Washing Machine | 11.5 yrs | 12 yrs | -4% |
| Water Heater | 14.4 yrs | 15 yrs | -4% |
Regional Water Comparison
How Dandenong North compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Dandenong North, Victoria | ≈ 0–59 mg/L | 🟢 Soft | reservoir |
| Dandenong, Victoria | ≈ 0–60 mg/L | 🟢 Soft | reservoir |
| Noble Park, Victoria | ≈ 120–179 mg/L | 🟠 Hard | reservoir |
| Rowville, Victoria | ≈ 0–60 mg/L | 🟢 Soft | reservoir |
| Keysborough, Victoria | ≈ 60–120 mg/L | 🟡 Moderately Hard | reservoir |
National Benchmark
How Dandenong North compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Dandenong North | ≈ 0–59 mg/L | 🟢 None |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Dandenong North's Water Unique?
Local geology and source profile
<p><b>South East Water</b> provides drinking water to residents of Dandenong North, Victoria. Their supply is drawn from Melbourne's extensive water system, which includes the <b>Yarra River</b> and major reservoirs like <b>Cardinia</b>, <b>Silvan</b>, and <b>Thomson</b>. Raw water undergoes treatment at facilities such as the <b>Cardinia Reservoir Water Treatment Plant</b> before being distributed throughout the Dandenong zone. <b>South East Water</b> is committed to meeting the Australian Drinking Water Guidelines (ADWG) across its supply originating in the <b>Yarra</b> catchment.</p>
<p>The geological landscape influencing Dandenong North's water is characterized by ancient Ordovician sandstones and Devonian granites, alongside Tertiary volcanic rocks. These formations, part of the <b>Central Highlands</b> watershed, are largely siliceous and contain minimal limestone. Consequently, the water is very soft, as the bedrock and peaty soils in the upland reservoir areas naturally release very few dissolved minerals, particularly calcium and magnesium. This results in a water chemistry that is low in total dissolved solids.</p>
<p>This very soft water offers benefits for homeowners, as it significantly reduces limescale buildup. You'll notice less scale in appliances like kettles, dishwashers, and washing machines, potentially extending their lifespan. Additionally, soft water allows soaps and detergents to lather more easily, making showers and laundry feel more effective, and it can leave skin and hair feeling softer. No water softener is needed for this supply, and routine cleaning of appliances is generally sufficient. The water consistently meets ADWG standards, with safe levels of chlorine for disinfection and optimized fluoride for dental health.</p>
Geology & Source: Yarra River catchment; sedimentary and volcanic rocks; low mineral dissolution produces very soft water
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