Riverwood 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
91.6 mg/L
Est. Daily Cost
A$0.17
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 Riverwood, your appliances are currently losing 7% efficiency due to mineral buildup.
| Appliance | In Riverwood | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.9 yrs | 8.5 yrs | -7% |
| Washing Machine | 11.7 yrs | 12 yrs | -3% |
| Water Heater | 13.5 yrs | 15 yrs | -10% |
Regional Water Comparison
How Riverwood compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Riverwood, New South Wales | 52.5 mg/L | 🟢 Soft | reservoir |
| Peakhurst, New South Wales | 52.5 mg/L | 🟢 Soft | reservoir |
| Punchbowl, New South Wales | 199.5 mg/L | 🔴 Very Hard | reservoir |
| Padstow, New South Wales | 52.5 mg/L | 🟢 Soft | reservoir |
| Roselands, New South Wales | 90.5 mg/L | 🟡 Moderately Hard | reservoir |
National Benchmark
How Riverwood compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Riverwood | 52.5 mg/L | 🟢 None |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Riverwood's Water Unique?
Local geology and source profile
Riverwood'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 Canterbury-Bankstown City LGA southern distribution in New South Wales. Water hardness in Riverwood is measured at 52.5 mg/L — classified as soft — well below the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Riverwood — a family-oriented residential suburb in the southern Canterbury-Bankstown LGA adjacent to Peakhurst and Narwee near the East Hills rail line, known for the Riverwood Shopping Centre on Thurston Street, the local parkland and recreational facilities, and the established multicultural residential character of this outer southern Canterbury-Bankstown community — receives predominantly soft supply consistent with the softer southern Canterbury-Bankstown distribution corridor.
Riverwood's soft supply reflects a predominantly Warragamba Dam contribution with minimal Hawkesbury-Nepean blending at the southern Canterbury-Bankstown 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 Riverwood southern Canterbury-Bankstown distribution at 52.5 mg/L and TDS 91.6 mg/L is identical to the adjacent Padstow sub-zone (52.5 mg/L, TDS 91.6 mg/L), confirming the consistently soft Warragamba-dominant character of the southern Canterbury-Bankstown supply corridor.
Riverwood 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. Riverwood's outer southern Canterbury-Bankstown residential community and the Riverwood Shopping Centre precinct benefit from this 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 Riverwood Canterbury-Bankstown southern LGA supply carries soft water at 52.5 mg/L with low TDS of 91.6 mg/L, reflecting a predominantly Warragamba-dominant supply with minimal Hawkesbury-Nepean component, consistent with the softer southern Canterbury-Bankstown sub-zones (Padstow 52.5 mg/L, Revesby 43.5 mg/L) in the same LGA.