Cabramatta 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
316.9 mg/L
Est. Daily Cost
A$0.46
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 Cabramatta, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Cabramatta | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.8 yrs | 8.5 yrs | -44% |
| Washing Machine | 8.2 yrs | 12 yrs | -32% |
| Water Heater | 9.7 yrs | 15 yrs | -35% |
Regional Water Comparison
How Cabramatta compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Cabramatta, New South Wales | 146.5 mg/L | 🟠 Hard | reservoir |
| Canley Vale, New South Wales | 97.5 mg/L | 🟡 Moderately Hard | reservoir |
| Canley Heights, New South Wales | 147 mg/L | 🟠 Hard | reservoir |
| Liverpool, New South Wales | 72.5 mg/L | 🟡 Moderately Hard | reservoir |
| Fairfield, New South Wales | 28 mg/L | 🟢 Soft | reservoir |
National Benchmark
How Cabramatta compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Cabramatta | 146.5 mg/L | 🟠 Moderate |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Cabramatta's Water Unique?
Local geology and source profile
Cabramatta's drinking water is supplied by Sydney Water, treated at the Prospect Water Filtration Plant blending Warragamba Dam storage with Hawkesbury-Nepean river supply for the Fairfield LGA outer south-western Sydney distribution in New South Wales. Water hardness in Cabramatta is measured at 146.5 mg/L — classified as moderately hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Cabramatta, in the Fairfield LGA — Australia's most culturally diverse suburb and home to Sydney's iconic Vietnamese community around Cabramatta's Buddhist temple precinct and railway station market — receives supply via the western Sydney Prospect distribution corridor with a significant Nepean-sourced proportion, producing hardness consistent with the broader south-western Sydney outer corridor.
Cabramatta's elevated hardness reflects the Hawkesbury-Nepean component dominant in the outer south-western Sydney Prospect distribution blend. The Nepean River traverses the Cumberland Plain alluvial floodplain — Triassic carbonate-cemented sedimentary deposits — dissolving substantial calcium bicarbonate before treatment. The Fairfield LGA outer south-western corridor consistently delivers moderately hard supply to Cabramatta, Merrylands, and adjacent western Sydney suburbs, reflecting the higher Nepean-sourced proportion relative to the pure Warragamba blend that reaches softer eastern and northern Sydney zones.
Cabramatta residents face significant limescale build-up in kettles and on taps — descaling every four to six weeks is typical. Hot water systems benefit from annual inspection and element maintenance. The elevated lead reading (0.004 mg/L) warrants briefly running the cold tap before use in older established homes. Sydney Water provides water quality information at sydneywater.com.au, with all ADWG health standards consistently met. A water filter or scale inhibitor is a practical investment for households managing the moderately hard western Sydney supply.
Geology & Source: Supplied by Sydney Water from the Prospect Water Filtration Plant blending Warragamba Dam with a significant Nepean River component — the Cabramatta Fairfield outer south-west Sydney distribution carries moderately hard water at 146.5 mg/L with elevated TDS of 316.9 mg/L, reflecting the Hawkesbury-Nepean plain proportion dominant in the outer south-western Sydney distribution corridor.