Busselton Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
mixed
pH Level
7.8
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
248.6 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 Busselton, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Busselton | 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 Busselton compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Busselton, Western Australia | ≈ 120–179 mg/L | 🟠 Hard | mixed |
| Bunbury, Western Australia | ≈ 0–60 mg/L | 🟢 Soft | mixed |
| Australind, Western Australia | ≈ 120–179 mg/L | 🟠 Hard | mixed |
| Halls Head, Western Australia | ≈ 180+ mg/L | 🔴 Very Hard | mixed |
| Mandurah, Western Australia | ≈ 120–179 mg/L | 🟠 Hard | mixed |
National Benchmark
How Busselton compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Busselton | ≈ 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 Busselton's Water Unique?
Local geology and source profile
The local water utility for Busselton, Western Australia, is Busselton Water. It supplies drinking water to the City of Busselton and surrounding areas in the South West region. The utility relies entirely on groundwater, drawing from the Leederville and Yarragadee aquifers through eight production bores located at depth. Raw water undergoes treatment at Busselton Water’s treatment plants. Processes like oxidation, filtration, and disinfection are used to remove iron, manganese, turbidity, and other impurities before the water is distributed to residents. The groundwater originates in recharge areas south of the city, where rainfall infiltrates the Swan Coastal Plain and percolates into these vital aquifers.
These aquifers are geologically composed of Tertiary to Cretaceous sandstone and limestone formations. These rock types contain abundant calcium and magnesium minerals. As water moves slowly through these rocks over long flow paths, it dissolves these minerals. This process results in a hard water supply with elevated levels of dissolved calcium and magnesium. The confined nature of the Leederville and Yarragadee aquifers at depth offers good natural protection from surface contamination. However, this prolonged contact with mineral-rich rock contributes significantly to the water's hardness.
Residents can expect visible scale deposits on kettles, showerheads, taps, and glassware due to the water's hardness. You might also notice reduced soap lathering and potential spotting on dishes and shower screens. Appliances such as electric kettles, hot-water systems, and dishwashers are particularly affected and benefit from regular descaling with vinegar or citric-acid-based cleaners. While a water softener isn't strictly necessary for health, it can significantly reduce scale buildup and extend the life of appliances and plumbing fixtures. Busselton Water reports 100% compliance with all health-related criteria in the Australian Drinking Water Guidelines, confirming the treated water is safe to drink.
Geology & Source: Deep confined Leederville and Yarragadee aquifers; Tertiary to Cretaceous sandstone and limestone formations dissolve calcium and magnesium, producing hard water
Other Western Australia Water Reports
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