Ivanhoe Water Hardness & Quality Report (2026)
Water Hardness
Source
reservoir
pH Level
7.4
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
133.6 mg/L
Est. Daily Cost
A$0.21
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 Ivanhoe, your appliances are currently losing 9% efficiency due to mineral buildup.
| Appliance | In Ivanhoe | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.4 yrs | 8.5 yrs | -13% |
| Washing Machine | 11.2 yrs | 12 yrs | -7% |
| Water Heater | 13 yrs | 15 yrs | -13% |
Regional Water Comparison
How Ivanhoe compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Ivanhoe, Victoria | 66 mg/L | 🟡 Moderately Hard | reservoir |
| Preston, Victoria | 58.5 mg/L | 🟢 Soft | reservoir |
| Thornbury, Victoria | 31.5 mg/L | 🟢 Soft | reservoir |
| Kew, Victoria | 114 mg/L | 🟡 Moderately Hard | reservoir |
| Bulleen, Victoria | 70.5 mg/L | 🟡 Moderately Hard | reservoir |
National Benchmark
How Ivanhoe compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Ivanhoe | 66 mg/L | 🟡 Low |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Ivanhoe's Water Unique?
Local geology and source profile
Ivanhoe's drinking water is supplied by Yarra Valley Water as water retailer, with bulk supply from Melbourne Water drawing predominantly from the Thomson Reservoir and Upper Yarra Reservoir direct catchment supply for the Banyule City Council LGA inner northern Melbourne distribution in Victoria. Water hardness in Ivanhoe is measured at 66 mg/L — classified as slightly hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Ivanhoe, in the Banyule City LGA — a charming inner northern Melbourne suburb on the Yarra River, known for the Ivanhoe Grammar School and Ivanhoe Girls' Grammar School precinct, the Lower Heidelberg Road café strip, the Tom Roberts Lookout Reserve on the Yarra River cliff, and the heritage character of the established Banyule residential community — receives a predominantly soft supply from the Yarra Ranges direct reservoir system.
Ivanhoe's slightly elevated hardness reflects a low Winneke Water Treatment Plant contribution at the inner northern Banyule Yarra Valley Water distribution sub-zone. The Thomson and Upper Yarra storages drain Devonian granite and rhyodacite in protected wilderness catchments — contributing negligible dissolved minerals. The Ivanhoe inner northern Banyule distribution at 66 mg/L and TDS 133.6 mg/L reflects a predominantly direct reservoir supply with minimal Winneke blending, consistent with the soft-to-slightly-hard character of the inner northern Melbourne Yarra Valley Water supply corridor in the Banyule and Yarra LGA sub-zones.
Ivanhoe residents enjoy low limescale accumulation on taps and in kettles — descaling every two to three months is typically adequate. Hot water systems accumulate minimal scale. The low lead reading (0.003 mg/L) is good. Yarra Valley Water provides water quality information at yvw.com.au, with all ADWG health standards consistently met. Ivanhoe's Yarra River community and the Heidelberg school precinct benefit from this soft, clean supply meeting all ADWG standards.
Geology & Source: Supplied by Yarra Valley Water (water retailer) and Melbourne Water (wholesale) via predominantly direct Thomson Reservoir and Upper Yarra catchment supply — the Ivanhoe Banyule inner northern Melbourne supply carries slightly hard water at 66 mg/L with TDS of 133.6 mg/L, reflecting a low Winneke WTP proportion at this inner northern Banyule Yarra Valley Water distribution sub-zone.