Cranebrook Water Hardness & Quality Report (2026)
Water Hardness
Source
reservoir
pH Level
7.9
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
326.8 mg/L
Est. Daily Cost
A$0.47
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 Cranebrook, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Cranebrook | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.6 yrs | 8.5 yrs | -46% |
| Washing Machine | 8.1 yrs | 12 yrs | -33% |
| Water Heater | 9.6 yrs | 15 yrs | -36% |
Regional Water Comparison
How Cranebrook compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Cranebrook, New South Wales | 150 mg/L | 🟠 Hard | reservoir |
| Penrith, New South Wales | 167.5 mg/L | 🟠 Hard | reservoir |
| Kingswood Park, New South Wales | 58.5 mg/L | 🟢 Soft | reservoir |
| South Penrith, New South Wales | 69 mg/L | 🟡 Moderately Hard | reservoir |
| Glenmore Park, New South Wales | 91 mg/L | 🟡 Moderately Hard | reservoir |
National Benchmark
How Cranebrook compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Cranebrook | 150 mg/L | 🟠 Moderate |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Cranebrook's Water Unique?
Local geology and source profile
Cranebrook's drinking water is supplied by Sydney Water, treated at the Prospect Water Filtration Plant blending Warragamba Dam with a dominant Hawkesbury-Nepean component for the Penrith LGA outer western Sydney distribution in New South Wales. Water hardness in Cranebrook is measured at 150 mg/L — classified as moderately hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Cranebrook — a large outer western Penrith suburb of established homes and community facilities adjacent to the Penrith urban fringe and the Hawkesbury River flood terrace, within sight of the Blue Mountains escarpment — carries supply reflecting the strong Hawkesbury-Nepean influence in the outer western Penrith supply zone, consistent with the heavier Nepean River component reaching 199.5 mg/L at Glenmore Park in the same Penrith LGA corridor.
Cranebrook's elevated hardness reflects the dominant Hawkesbury-Nepean component in the outer western Penrith Prospect distribution blend. The Nepean River at Penrith traverses the Triassic carbonate-cemented Cumberland Plain alluvial and the Hawkesbury River Triassic sandstone transitions — dissolving substantial calcium bicarbonate and associated mineral salts before Prospect treatment. The Cranebrook outer western distribution sub-zone at 150 mg/L and TDS 326.8 mg/L reflects the significantly elevated Nepean River supply proportion at this outer western Penrith corridor near the river floodplain.
Cranebrook residents face moderate to heavy limescale build-up on taps, shower screens, and in kettles — descaling every three to four weeks is typical. Hot water systems benefit from annual inspection. The elevated lead reading (0.004 mg/L) warrants briefly running the cold tap before use in Cranebrook's residential properties. Sydney Water provides water quality information at sydneywater.com.au, with all ADWG health standards consistently met. A point-of-use water filter is a practical investment for Cranebrook's outer western Penrith community.
Geology & Source: Supplied by Sydney Water via the Prospect Water Filtration Plant blending Warragamba Dam with a dominant Hawkesbury-Nepean component — the Cranebrook Penrith LGA outer western Sydney supply carries moderately hard water at 150 mg/L with TDS of 326.8 mg/L, reflecting the strong Nepean River catchment influence at this outer western Penrith distribution sub-zone adjacent to the Nepean River floodplain.