Roselands Water Hardness & Quality Report (2026)
Water Hardness
Source
reservoir
pH Level
7.5
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
173.1 mg/L
Est. Daily Cost
A$0.29
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 Roselands, your appliances are currently losing 12% efficiency due to mineral buildup.
| Appliance | In Roselands | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.6 yrs | 8.5 yrs | -22% |
| Washing Machine | 10.3 yrs | 12 yrs | -14% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How Roselands compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Roselands, New South Wales | 90.5 mg/L | 🟡 Moderately Hard | reservoir |
| Wiley Park, New South Wales | 173 mg/L | 🟠 Hard | reservoir |
| Lakemba, New South Wales | 135 mg/L | 🟠 Hard | reservoir |
| Beverly Hills, New South Wales | 145 mg/L | 🟠 Hard | reservoir |
| Belmore, New South Wales | 145 mg/L | 🟠 Hard | reservoir |
National Benchmark
How Roselands compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Roselands | 90.5 mg/L | 🟡 Low |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Roselands's Water Unique?
Local geology and source profile
Roselands' drinking water is supplied by Sydney Water, treated at the Prospect Water Filtration Plant with a moderate Hawkesbury-Nepean component for the Canterbury-Bankstown City LGA central distribution in New South Wales. Water hardness in Roselands is measured at 90.5 mg/L — classified as slightly hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Roselands — a residential suburb in the central Canterbury-Bankstown LGA, known as home to the Roselands Shopping Centre on Roselands Drive (one of Sydney's early major suburban shopping malls), the Auburn-Roselands residential community, and the established multicultural residential character of the central Canterbury-Bankstown corridor — receives slightly elevated supply intermediate between the harder northern and softer southern Canterbury-Bankstown sub-zone distribution.
Roselands' slightly elevated hardness reflects a moderate Hawkesbury-Nepean component in the central Canterbury-Bankstown Prospect distribution blend. The Hawkesbury-Nepean system traverses Cumberland Plain alluvial terrain and Triassic carbonate-cemented Hawkesbury Sandstone contributing moderate dissolved calcium before Prospect treatment. The Roselands central Canterbury-Bankstown distribution at 90.5 mg/L and TDS 173.1 mg/L is intermediate between the harder northern Canterbury-Bankstown sub-zones (Yagoona 168 mg/L, Chester Hill 148 mg/L) and the soft southern sub-zones (Riverwood 52.5 mg/L, Revesby 43.5 mg/L), confirming the north-to-south supply blend gradient across the Canterbury-Bankstown distribution network.
Roselands residents can expect moderate limescale on taps and in kettles — descaling every two to three months is typically adequate. Hot water systems benefit from periodic inspection. The low lead reading (0.003 mg/L) is good. Sydney Water provides water quality information at sydneywater.com.au, with all ADWG health standards consistently met. Roselands' Canterbury-Bankstown central residential community and the Roselands Shopping Centre precinct benefit from a safe supply meeting all ADWG standards.
Geology & Source: Supplied by Sydney Water via the Prospect Water Filtration Plant with a moderate Hawkesbury-Nepean component — the Roselands Canterbury-Bankstown central LGA supply carries slightly hard water at 90.5 mg/L with TDS of 173.1 mg/L, intermediate between the harder northern Canterbury-Bankstown sub-zones (Yagoona 168 mg/L) and the soft southern sub-zones (Riverwood 52.5 mg/L), reflecting a moderate Hawkesbury-Nepean proportion at the Roselands distribution sub-zone.