Bayswater Water Hardness & Quality Report (2026)
Water Hardness
Source
reservoir
pH Level
7.6
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
207.3 mg/L
Est. Daily Cost
A$0.30
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 Bayswater, your appliances are currently losing 12% efficiency due to mineral buildup.
| Appliance | In Bayswater | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.5 yrs | 8.5 yrs | -24% |
| Washing Machine | 10.1 yrs | 12 yrs | -16% |
| Water Heater | 11.9 yrs | 15 yrs | -21% |
Regional Water Comparison
How Bayswater compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Bayswater, Victoria | 93.5 mg/L | 🟡 Moderately Hard | reservoir |
| Boronia, Victoria | 5 mg/L | 🟢 Soft | reservoir |
| Ringwood East, Victoria | 14.5 mg/L | 🟢 Soft | reservoir |
| Ferntree Gully, Victoria | 43.5 mg/L | 🟢 Soft | reservoir |
| Ringwood, Victoria | 15 mg/L | 🟢 Soft | reservoir |
National Benchmark
How Bayswater compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Bayswater | 93.5 mg/L | 🟡 Low |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Bayswater's Water Unique?
Local geology and source profile
Bayswater's drinking water is supplied by Yarra Valley Water as water retailer, with bulk supply from Melbourne Water incorporating a moderate Winneke Water Treatment Plant contribution for the Knox City Council LGA outer eastern Melbourne distribution in Victoria. Water hardness in Bayswater is measured at 93.5 mg/L — classified as slightly hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Bayswater, in the Knox City LGA — an outer eastern Melbourne suburb adjacent to Boronia and Kilsyth, known for the Bayswater North industrial precinct, the Maroondah Highway corridor, the Knox and Yarra Ranges foothills gateway suburban residential character, and the established family community of the outer eastern Melbourne Knox City corridor — receives slightly elevated supply from the Yarra Valley Water outer eastern Knox distribution.
Bayswater's slightly elevated hardness reflects a moderate Winneke Water Treatment Plant contribution at the outer eastern Knox City Yarra Valley Water distribution sub-zone. The Winneke WTP draws from the Yarra River at Yering Gorge traversing Devonian basalt and alluvial valley terrain — contributing moderate calcium relative to the very soft direct Yarra Ranges reservoir supply. The Bayswater Knox City outer eastern distribution at 93.5 mg/L and TDS 207.3 mg/L reflects the moderate Winneke proportion at this sub-zone, consistent with a moderate blend of soft direct reservoir supply and slightly harder Winneke WTP treated water for the outer eastern Melbourne Knox distribution corridor.
Bayswater residents can expect occasional moderate limescale on taps and in kettles — descaling every two to three months is typically adequate. Hot water systems benefit from periodic inspection. The elevated lead reading (0.004 mg/L) warrants briefly running the cold tap before use. Yarra Valley Water provides water quality information at yvw.com.au, with all ADWG health standards consistently met. Bayswater's outer eastern Melbourne residential community and the Maroondah Highway corridor benefit from a safe supply meeting all ADWG standards.
Geology & Source: Supplied by Yarra Valley Water (water retailer) and Melbourne Water (wholesale) incorporating a moderate Winneke Water Treatment Plant contribution — the Bayswater Knox City outer eastern Melbourne supply carries slightly hard water at 93.5 mg/L with TDS of 207.3 mg/L, reflecting the moderate Winneke WTP proportion in the outer eastern Knox City Yarra Valley Water distribution sub-zone.