Leeming Water Hardness & Quality Report (2026)
Water Hardness
Source
mixed
pH Level
8
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
529.3 mg/L
Est. Daily Cost
A$0.62
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 Leeming, your appliances are currently losing 26% efficiency due to mineral buildup.
| Appliance | In Leeming | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.2 yrs | 8.5 yrs | -62% |
| Washing Machine | 6.4 yrs | 12 yrs | -47% |
| Water Heater | 7.8 yrs | 15 yrs | -48% |
Regional Water Comparison
How Leeming compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Leeming, Western Australia | 195 mg/L | 🔴 Very Hard | mixed |
| Willetton, Western Australia | 184.5 mg/L | 🔴 Very Hard | mixed |
| Canning Vale, Western Australia | 162 mg/L | 🟠 Hard | mixed |
| Como, Western Australia | 108 mg/L | 🟡 Moderately Hard | mixed |
| Hamilton Hill, Western Australia | 209 mg/L | 🔴 Very Hard | mixed |
National Benchmark
How Leeming compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Leeming | 195 mg/L | 🔴 High |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Leeming's Water Unique?
Local geology and source profile
Leeming's drinking water is supplied by the Water Corporation via the Integrated Water Supply Scheme (IWSS), incorporating a high Gnangara Mound groundwater proportion for the City of Melville LGA outer southern Perth distribution in Western Australia. Water hardness in Leeming is measured at 195 mg/L — classified as moderately hard, approaching the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Leeming — a suburban community in the outer southern Perth City of Melville LGA adjacent to Bull Creek, Murdoch, and the Murdoch University campus, known for the Leeming Sparks motor racing complex, the Murdoch Drive commercial and retail corridor, and the outer southern Perth residential community connecting Murdoch University and the St John of God Murdoch Hospital precinct — carries moderately hard supply approaching the ADWG aesthetic guideline from the outer southern Melville IWSS distribution.
Leeming's moderately elevated hardness reflects a high Gnangara Mound groundwater fraction in the outer southern Melville Perth IWSS distribution blend. The Gnangara Mound groundwater percolates through the Superficial Aquifer and Tamala Limestone — the porous Eocene carbonate formation of the Swan Coastal Plain — accumulating dissolved calcium, magnesium, and sulphates. At 195 mg/L and TDS 529.3 mg/L, Leeming's outer southern Melville distribution approaches the ADWG 200 mg/L aesthetic guideline, reflecting the high groundwater proportion at the outer southern Perth Melville distribution sub-zone.
Leeming residents face moderate-to-significant limescale build-up on taps and in kettles — descaling every four to six weeks is typical. Hot water systems benefit from regular inspection. Solar hot water in WA's climate benefits from annual servicing. Under WA water restrictions, outdoor watering is limited to two days per week. The elevated lead reading (0.004 mg/L) warrants briefly running the cold tap before use. The Water Corporation provides water quality information at watercorporation.com.au, with all ADWG health standards met. Leeming's Murdoch University community and the outer southern Perth residential corridor benefit from supply meeting all ADWG standards.
Geology & Source: Supplied by the Water Corporation via the Integrated Water Supply Scheme incorporating a high Gnangara Mound groundwater proportion — the Leeming City of Melville outer southern Perth supply carries moderately hard water at 195 mg/L with TDS of 529.3 mg/L, approaching the ADWG aesthetic guideline of 200 mg/L, reflecting the elevated Gnangara Mound groundwater fraction in the outer southern Melville City Perth IWSS distribution sub-zone.