Lane Cove Water Hardness & Quality Report (2026)
Water Hardness
Source
reservoir
pH Level
7.7
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
262.4 mg/L
Est. Daily Cost
A$0.40
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 Lane Cove, your appliances are currently losing 17% efficiency due to mineral buildup.
| Appliance | In Lane Cove | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.4 yrs | 8.5 yrs | -36% |
| Washing Machine | 8.9 yrs | 12 yrs | -26% |
| Water Heater | 10.5 yrs | 15 yrs | -30% |
Regional Water Comparison
How Lane Cove compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Lane Cove, New South Wales | 126.5 mg/L | 🟠 Hard | reservoir |
| Lane Cove North, New South Wales | 181 mg/L | 🔴 Very Hard | reservoir |
| Chatswood, New South Wales | 179.5 mg/L | 🟠 Hard | reservoir |
| Gladesville, New South Wales | 32 mg/L | 🟢 Soft | reservoir |
| Drummoyne, New South Wales | 176.5 mg/L | 🟠 Hard | reservoir |
National Benchmark
How Lane Cove compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Lane Cove | 126.5 mg/L | 🟠 Moderate |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Lane Cove's Water Unique?
Local geology and source profile
Lane Cove's drinking water is supplied by Sydney Water, treated at the Prospect Water Filtration Plant incorporating a moderate Hawkesbury-Nepean component for the Lane Cove Municipal Council LGA northern Sydney distribution in New South Wales. Water hardness in Lane Cove is measured at 126.5 mg/L — classified as moderately hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Lane Cove — an attractive leafy residential municipality in the northern Sydney Lower North Shore, known for the Lane Cove National Park bushland reserve, the Lane Cove Village retail and restaurant precinct, the Sydney Harbour catchment walking tracks, and the sought-after waterfront and bushland-adjacent residential character of this northern Sydney Lane Cove LGA — receives moderately hard supply from the northern Sydney Prospect distribution blend.
Lane Cove's moderately hard supply reflects a moderate Hawkesbury-Nepean component in the northern Sydney Lane Cove LGA Prospect distribution blend. The Hawkesbury-Nepean system traverses Cumberland Plain alluvial terrain and Triassic carbonate-cemented sedimentary formations contributing moderate dissolved calcium and minerals before Prospect treatment. The Lane Cove northern Sydney distribution at 126.5 mg/L and TDS 262.4 mg/L receives a moderate Hawkesbury-Nepean fraction, consistent with the moderately hard character of the Lower North Shore northern Sydney supply corridor receiving a higher Hawkesbury-Nepean proportion than the predominantly Warragamba-supplied inner western sub-zones.
Lane Cove residents can expect moderate limescale build-up 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. Lane Cove's Lane Cove National Park bushland community and the Lane Cove Village retail 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 Lane Cove Lane Cove LGA northern Sydney supply carries moderately hard water at 126.5 mg/L with TDS of 262.4 mg/L, reflecting a moderate Hawkesbury-Nepean proportion at this northern Sydney Lane Cove LGA Prospect distribution sub-zone.