Wentworthville Water Hardness & Quality Report (2026)
Water Hardness
Source
reservoir
pH Level
7.3
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
97.6 mg/L
Est. Daily Cost
A$0.18
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 Wentworthville, your appliances are currently losing 7% efficiency due to mineral buildup.
| Appliance | In Wentworthville | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.8 yrs | 8.5 yrs | -8% |
| Washing Machine | 11.5 yrs | 12 yrs | -4% |
| Water Heater | 13.4 yrs | 15 yrs | -11% |
Regional Water Comparison
How Wentworthville compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Wentworthville, New South Wales | 55.5 mg/L | 🟢 Soft | reservoir |
| Westmead, New South Wales | 45 mg/L | 🟢 Soft | reservoir |
| Greystanes, New South Wales | 155 mg/L | 🟠 Hard | reservoir |
| Toongabbie, New South Wales | 27.5 mg/L | 🟢 Soft | reservoir |
| Merrylands, New South Wales | 123 mg/L | 🟠 Hard | reservoir |
National Benchmark
How Wentworthville compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Wentworthville | 55.5 mg/L | 🟢 None |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Wentworthville's Water Unique?
Local geology and source profile
Wentworthville's drinking water is supplied by Sydney Water, treated at the Prospect Water Filtration Plant drawing predominantly from Warragamba Dam (Nepean River system) for the Cumberland City Council LGA outer western Sydney distribution in New South Wales. Water hardness in Wentworthville is measured at 55.5 mg/L — classified as soft — well below the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Wentworthville — a residential suburb in the outer western Sydney Cumberland City LGA adjacent to Pendle Hill and Girraween, known for the Wentworthville Magpies rugby league club community, the residential streets of the Toongabbie Creek corridor, and the outer western Sydney multicultural community connecting the Parramatta and Blacktown LGA residential corridors — receives soft supply consistent with the outer western Sydney Cumberland City LGA predominantly Warragamba-dominant distribution.
Wentworthville's soft supply reflects a predominantly Warragamba Dam contribution with minimal Hawkesbury-Nepean blending at the outer western Cumberland City Prospect distribution sub-zone. Warragamba Dam collects rainfall from the Blue Mountains sandstone plateau and Kanangra–Boyd granite uplands — chemically resistant terrain contributing negligible dissolved minerals — producing soft supply at 55.5 mg/L and TDS 97.6 mg/L for the outer western Cumberland distribution sub-zone. Wentworthville's soft supply is consistent with other outer western Sydney soft sub-zones (Smithfield 54.5 mg/L, Kingswood Park 58.5 mg/L) in the same Prospect distribution corridor.
Wentworthville residents enjoy low to moderate limescale accumulation on taps and in kettles — descaling every two to three months is typically adequate. Hot water systems accumulate minimal scale. The low lead reading (0.002 mg/L) is excellent. Sydney Water provides water quality information at sydneywater.com.au, with all ADWG health standards consistently met. Wentworthville's outer western Sydney residential community and the Toongabbie Creek corridor benefit from this soft supply meeting all ADWG standards.
Geology & Source: Supplied by Sydney Water via the Prospect Water Filtration Plant drawing predominantly from Warragamba Dam — the Wentworthville Cumberland outer western Sydney supply carries soft water at 55.5 mg/L with low TDS of 97.6 mg/L, reflecting the predominantly Warragamba-dominant supply with minimal Hawkesbury-Nepean component in the outer western Cumberland City LGA Wentworthville Prospect distribution sub-zone.