Marsfield 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
108.8 mg/L
Est. Daily Cost
A$0.19
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 Marsfield, your appliances are currently losing 8% efficiency due to mineral buildup.
| Appliance | In Marsfield | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.6 yrs | 8.5 yrs | -11% |
| Washing Machine | 11.3 yrs | 12 yrs | -6% |
| Water Heater | 13.2 yrs | 15 yrs | -12% |
Regional Water Comparison
How Marsfield compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Marsfield, New South Wales | 61 mg/L | 🟡 Moderately Hard | reservoir |
| Epping, New South Wales | 51 mg/L | 🟢 Soft | reservoir |
| North Ryde, New South Wales | 75.5 mg/L | 🟡 Moderately Hard | reservoir |
| Eastwood, New South Wales | 90 mg/L | 🟡 Moderately Hard | reservoir |
| Ryde, New South Wales | 159 mg/L | 🟠 Hard | reservoir |
National Benchmark
How Marsfield compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Marsfield | 61 mg/L | 🟡 Low |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Marsfield's Water Unique?
Local geology and source profile
Marsfield'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 Ryde City LGA inner north-western Sydney distribution in New South Wales. Water hardness in Marsfield is measured at 61 mg/L — classified as slightly hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Marsfield — a leafy residential suburb in the northern Ryde LGA, known for the large Foxtel headquarters campus, the Marsfield–Putney residential estates on the Ryde ridge, and the quiet tree-lined residential character of the Ryde northern plateau overlooking the Lane Cove River valley — receives a predominantly soft supply consistent with the Warragamba-dominant Ryde LGA distribution blend.
Marsfiled's soft supply reflects a predominantly Warragamba Dam contribution with a minor Hawkesbury-Nepean component at the northern Ryde LGA inner north-western 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 supply at 61 mg/L and TDS 108.8 mg/L. The Ryde LGA distribution sub-zones (Marsfield 61 mg/L, West Ryde 71 mg/L) are consistently in the soft-to-slightly-hard range, reflecting the predominantly Warragamba character of this northern inner-western Sydney supply corridor.
Marsfield 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 very 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. Marsfield's northern Ryde plateau residential community and the Foxtel headquarters campus 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 Marsfield Ryde LGA inner north-western Sydney supply carries slightly hard water at 61 mg/L with low TDS of 108.8 mg/L, reflecting a predominantly Warragamba-dominant supply with a minor Hawkesbury-Nepean component at this northern Ryde LGA distribution sub-zone.