Toongabbie 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
45 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, your appliances are currently losing 4% efficiency due to mineral buildup.
| Appliance | In Toongabbie | 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 compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Toongabbie, New South Wales | 27.5 mg/L | 🟢 Soft | reservoir |
| Seven Hills, New South Wales | 94.5 mg/L | 🟡 Moderately Hard | reservoir |
| Toongabbie West, New South Wales | 27.5 mg/L | 🟢 Soft | reservoir |
| Wentworthville, New South Wales | 55.5 mg/L | 🟢 Soft | reservoir |
| Winston Hills, New South Wales | 111.5 mg/L | 🟡 Moderately Hard | reservoir |
National Benchmark
How Toongabbie compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Toongabbie | 27.5 mg/L | 🟢 None |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
Bring Boronia-quality water to your Toongabbie home
Shop water softeners on Amazon.com →
What Makes Toongabbie's Water Unique?
Local geology and source profile
Toongabbie'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 Parramatta LGA inner western Sydney distribution in New South Wales. Water hardness in Toongabbie is measured at 27.5 mg/L — classified as soft — far below the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Toongabbie — a suburban residential community in the Parramatta LGA on the Old Windsor Road corridor, known for the Toongabbie Creek reserve, the Toongabbie railway station shopping precinct, and the established residential character of this historic inner western Sydney area — receives near-pure Warragamba supply, in remarkable contrast to the harder Seven Hills (94.5 mg/L) in the same Parramatta LGA.
Toongabbie's soft supply reflects the near-pure Warragamba Dam contribution at this Parramatta LGA inner western Prospect distribution sub-zone, with minimal Hawkesbury-Nepean blending. Warragamba Dam collects rainfall from the Blue Mountains sandstone plateau and Kanangra–Boyd granite uplands — chemically resistant terrain contributing negligible dissolved minerals — producing near-pure supply at 27.5 mg/L and TDS 45 mg/L. The Toongabbie inner western Parramatta distribution sub-zone receives a proportionally high Warragamba fraction through supply routing that bypasses the heavier Hawkesbury-Nepean component reaching the harder Parramatta and Seven Hills sub-zones.
Toongabbie residents enjoy very low limescale accumulation on taps, in kettles, and around shower fittings — descaling is an occasional rather than regular task. Hot water systems accumulate minimal scale. The very low lead reading (0.001 mg/L) confirms excellent supply quality. Sydney Water provides water quality information at sydneywater.com.au, with all ADWG health standards consistently met. The very soft, pure supply is a practical everyday benefit for Toongabbie's established inner western Sydney residential community.
Geology & Source: Supplied by Sydney Water via the Prospect Water Filtration Plant drawing predominantly from Warragamba Dam — the Toongabbie Parramatta LGA inner western Sydney supply carries soft water at 27.5 mg/L with very low TDS of 45 mg/L, reflecting a near-pure Warragamba-dominant supply blend at this Parramatta inner western distribution sub-zone, in stark contrast to the harder Seven Hills (94.5 mg/L) in the same Parramatta LGA.