Canley Heights Water Hardness & Quality Report (2026)
Water Hardness
Source
reservoir
pH Level
7.8
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
318.3 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 Canley Heights, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Canley Heights | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.7 yrs | 8.5 yrs | -45% |
| Washing Machine | 8.2 yrs | 12 yrs | -32% |
| Water Heater | 9.7 yrs | 15 yrs | -35% |
Regional Water Comparison
How Canley Heights compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Canley Heights, New South Wales | 147 mg/L | 🟠 Hard | reservoir |
| Fairfield West, New South Wales | 107.5 mg/L | 🟡 Moderately Hard | reservoir |
| Cabramatta, New South Wales | 146.5 mg/L | 🟠 Hard | reservoir |
| Canley Vale, New South Wales | 97.5 mg/L | 🟡 Moderately Hard | reservoir |
| Fairfield, New South Wales | 28 mg/L | 🟢 Soft | reservoir |
National Benchmark
How Canley Heights compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Canley Heights | 147 mg/L | 🟠 Moderate |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Canley Heights's Water Unique?
Local geology and source profile
Canley Heights' drinking water is supplied by Sydney Water, treated at the Prospect Water Filtration Plant with a significant Hawkesbury-Nepean component for the Fairfield City LGA outer western Sydney distribution in New South Wales. Water hardness in Canley Heights is measured at 147 mg/L — classified as moderately hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Canley Heights — a multicultural residential suburb in the outer western Sydney Fairfield City LGA adjacent to Canley Vale, Cabramatta, and Bonnyrigg Heights, known for the Canley Heights-Canley Vale Vietnamese, Chinese, and multicultural dining precinct on The Crescent and Canley Vale Road, the established outer western Sydney multicultural residential community of the Fairfield City corridor, and the Prospect Creek bushland and creek corridor reserve — receives the hardest supply of all imported Fairfield LGA sub-zones, reflecting a markedly higher Hawkesbury-Nepean proportion at the Canley Heights distribution.
Canley Heights' elevated hardness reflects a significantly higher Hawkesbury-Nepean component in the outer western Fairfield City Prospect distribution blend at this sub-zone compared to other Fairfield LGA sub-zones. The Hawkesbury-Nepean system traverses Cumberland Plain alluvial terrain and Triassic carbonate-cemented Hawkesbury Sandstone deposits contributing elevated dissolved calcium before Prospect treatment. At 147 mg/L and TDS 318.3 mg/L, Canley Heights is the hardest of the imported Fairfield LGA sub-zones — substantially harder than Smithfield (54.5 mg/L), Fairfield West (107.5 mg/L) in the same LGA — confirming the major supply blend variation across the Fairfield City distribution network.
Canley Heights residents can expect 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. The elevated lead reading (0.004 mg/L) warrants briefly running the cold tap before use. Sydney Water provides water quality information at sydneywater.com.au, with all ADWG health standards consistently met. Canley Heights' outer western Sydney multicultural residential community benefits from supply meeting all ADWG safe drinking standards.
Geology & Source: Supplied by Sydney Water via the Prospect Water Filtration Plant with a significant Hawkesbury-Nepean component — the Canley Heights Fairfield City outer western Sydney supply carries moderately hard water at 147 mg/L with TDS of 318.3 mg/L, substantially harder than other Fairfield LGA sub-zones (Smithfield 54.5 mg/L, Fairfield West 107.5 mg/L), reflecting a markedly higher Hawkesbury-Nepean proportion at the Canley Heights Fairfield distribution sub-zone.