Toongabbie West Water Hardness & Quality Report (2026)
Water Hardness
Source
reservoir
pH Level
7.1
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
44.9 mg/L
Est. Daily Cost
A$0.09
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 Toongabbie West, your appliances are currently losing 4% efficiency due to mineral buildup.
| Appliance | In Toongabbie West | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.7 yrs | 8.5 yrs | — |
| Washing Machine | 12.6 yrs | 12 yrs | — |
| Water Heater | 14.5 yrs | 15 yrs | -3% |
Regional Water Comparison
How Toongabbie West compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Toongabbie West, New South Wales | 27.5 mg/L | 🟢 Soft | reservoir |
| Seven Hills, New South Wales | 94.5 mg/L | 🟡 Moderately Hard | reservoir |
| Toongabbie, New South Wales | 27.5 mg/L | 🟢 Soft | reservoir |
| Blacktown, New South Wales | 78 mg/L | 🟡 Moderately Hard | reservoir |
| Wentworthville, New South Wales | 55.5 mg/L | 🟢 Soft | reservoir |
National Benchmark
How Toongabbie West compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Toongabbie West | 27.5 mg/L | 🟢 None |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Toongabbie West's Water Unique?
Local geology and source profile
Toongabbie West'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 Blacktown City LGA outer north-western Sydney distribution in New South Wales. Water hardness in Toongabbie West is measured at 27.5 mg/L — classified as very soft — far below the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Toongabbie West — a residential suburb in the outer north-western Sydney Blacktown City LGA adjacent to Pendle Hill and Girraween, known for the Toongabbie Creek parkland and bushland reserve, the established western Sydney multicultural residential character of the Toongabbie-Seven Hills corridor, and the suburban community connecting the outer north-western and Hills district residential communities — receives very soft supply characteristic of the outer north-western Blacktown LGA Prospect distribution.
Toongabbie West's very soft supply reflects a predominantly Warragamba Dam contribution with minimal Hawkesbury-Nepean blending at the outer north-western Blacktown 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. The Toongabbie West outer north-western Blacktown distribution at 27.5 mg/L and TDS 44.9 mg/L is consistent with The Ponds sub-zone (27 mg/L, TDS 44.1 mg/L) in the same Blacktown LGA, confirming the consistently very soft character of the outer north-western Sydney Blacktown Prospect distribution corridor.
Toongabbie West residents enjoy very low limescale accumulation on taps and in kettles — descaling every three to four months is typically adequate. Hot water systems accumulate minimal scale. The very low lead reading (0.001 mg/L) is excellent. Sydney Water provides water quality information at sydneywater.com.au, with all ADWG health standards consistently met. Toongabbie West's outer north-western Sydney residential community and the Toongabbie Creek parkland benefit from this very soft, clean supply meeting all ADWG standards.
Geology & Source: Supplied by Sydney Water via the Prospect Water Filtration Plant drawing predominantly from Warragamba Dam — the Toongabbie West Blacktown outer north-western Sydney supply carries very soft water at 27.5 mg/L with near-zero TDS of 44.9 mg/L, reflecting the predominantly Warragamba-dominant supply of the outer north-western Blacktown LGA distribution, consistent with the very soft Ponds sub-zone (27 mg/L) in the same Blacktown LGA.