Templestowe Lower 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
89 mg/L
Est. Daily Cost
A$0.15
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 Templestowe Lower, your appliances are currently losing 6% efficiency due to mineral buildup.
| Appliance | In Templestowe Lower | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8 yrs | 8.5 yrs | -6% |
| Washing Machine | 11.9 yrs | 12 yrs | -1% |
| Water Heater | 13.7 yrs | 15 yrs | -9% |
Regional Water Comparison
How Templestowe Lower compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Templestowe Lower, Victoria | 47 mg/L | 🟢 Soft | reservoir |
| Doncaster, Victoria | 84 mg/L | 🟡 Moderately Hard | reservoir |
| Balwyn North, Victoria | 68 mg/L | 🟡 Moderately Hard | reservoir |
| Bulleen, Victoria | 70.5 mg/L | 🟡 Moderately Hard | reservoir |
| Templestowe, Victoria | 47 mg/L | 🟢 Soft | reservoir |
National Benchmark
How Templestowe Lower compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Templestowe Lower | 47 mg/L | 🟢 None |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Templestowe Lower's Water Unique?
Local geology and source profile
Templestowe Lower's drinking water is supplied by Yarra Valley Water as water retailer, with bulk supply from Melbourne Water drawn predominantly from the Thomson Reservoir and Upper Yarra Reservoir catchments in the Yarra Ranges, Victoria. Water hardness in Templestowe Lower is measured at 47 mg/L — classified as soft — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Templestowe Lower, in the Manningham LGA — a well-regarded eastern Melbourne suburb of quality residential estates on the Yarra River valley escarpment, adjacent to the Ruffey Lake Park and the Koonung Trail, with easy access to the Eastern Freeway corridor — receives a soft supply identical to the adjacent Templestowe sub-zone (47 mg/L) in the same Manningham LGA, confirming consistent Yarra Ranges reservoir supply across the Manningham eastern distribution.
Templestowe Lower's soft supply reflects a distribution sub-zone receiving predominantly direct Thomson and Upper Yarra reservoir supply with a moderate Winneke Water Treatment Plant fraction. The Thomson and Upper Yarra storages drain across Devonian granite and rhyodacite — highly resistant igneous terrain contributing negligible dissolved minerals. The Templestowe Lower Manningham eastern distribution at 47 mg/L and TDS 89 mg/L confirms the delivery of predominantly soft Yarra Ranges supply to this quality eastern Melbourne residential precinct.
Templestowe Lower residents enjoy low limescale accumulation on taps, in kettles, and around shower fittings — descaling every two to three months is typically adequate. Hot water systems accumulate minimal scale. The low lead reading (0.002 mg/L) is reassuring. Yarra Valley Water provides water quality information at yvw.com.au, with all ADWG health standards consistently met. The soft supply benefits Templestowe Lower's quality eastern Melbourne residential community along the Yarra Valley escarpment and the Ruffey Lake Park corridor.
Geology & Source: Supplied by Yarra Valley Water (water retailer) and Melbourne Water (wholesale) predominantly from the Thomson Reservoir and Upper Yarra catchment systems — the Templestowe Lower Manningham eastern supply carries soft water at 47 mg/L, consistent with a predominantly direct Yarra Ranges reservoir supply blend at this eastern Manningham distribution sub-zone, identical to adjacent Templestowe (47 mg/L) in the same Manningham LGA.