Byford Water Hardness & Quality Report (2026)
Water Hardness
Source
mixed
pH Level
7.9
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
465.1 mg/L
Est. Daily Cost
A$0.57
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 Byford, your appliances are currently losing 24% efficiency due to mineral buildup.
| Appliance | In Byford | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.7 yrs | 8.5 yrs | -56% |
| Washing Machine | 7 yrs | 12 yrs | -42% |
| Water Heater | 8.4 yrs | 15 yrs | -44% |
Regional Water Comparison
How Byford compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Byford, Western Australia | 179 mg/L | 🟠 Hard | mixed |
| Armadale, Western Australia | 166.5 mg/L | 🟠 Hard | mixed |
| Seville Grove, Western Australia | 204.5 mg/L | 🔴 Very Hard | mixed |
| Kelmscott, Western Australia | 237.5 mg/L | 🔴 Very Hard | mixed |
| Southern River, Western Australia | 120.5 mg/L | 🟠 Hard | mixed |
National Benchmark
How Byford compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Byford | 179 mg/L | 🟠 Moderate |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Byford's Water Unique?
Local geology and source profile
Byford's drinking water is supplied by the Water Corporation via the Integrated Water Supply Scheme (IWSS), blending surface supply from Mundaring Weir and the Darling Ranges catchment system with Gnangara Mound limestone groundwater for the Serpentine-Jarrahdale LGA outer south-eastern Perth distribution in Western Australia. Water hardness in Byford is measured at 179 mg/L — classified as moderately hard, approaching the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Byford, in the outer south-eastern Serpentine-Jarrahdale LGA — a rapidly growing outer suburban corridor at the Darling Ranges foothills — receives an IWSS blend that moderates the harder limestone groundwater component with the softer Darling Ranges surface supply.
Byford's moderately hard supply reflects a blend of the Darling Ranges surface supply component and Tamala Limestone groundwater in the outer south-east IWSS distribution. The Mundaring Weir and Darling Ranges catchments draw from Precambrian granite and gneiss of the Yilgarn Craton — producing softer surface water relative to the limestone groundwater sources. The outer Serpentine-Jarrahdale distribution corridor receives an IWSS blend with a proportionally greater surface supply fraction than the inner Perth limestone groundwater-dominant zones, moderating the hardness below the 200 mg/L ADWG aesthetic guideline.
Byford residents face moderate limescale build-up on taps and in kettles — descaling every three to four weeks is typical. Solar hot water systems popular in WA's climate accumulate scale; annual servicing is recommended. Under WA water restrictions, garden irrigation is limited to two days per week. The elevated lead reading (0.003 mg/L) warrants briefly running the cold tap before use in newer properties. The Water Corporation provides water quality information at watercorporation.com.au, with all ADWG health standards met throughout the Serpentine-Jarrahdale outer south-east supply zone.
Geology & Source: Supplied by the Water Corporation via the Integrated Water Supply Scheme from the Mundaring Weir and Darling Ranges surface supply, supplemented by Gnangara Mound limestone groundwater — the Byford Serpentine-Jarrahdale outer south-east Perth supply carries moderately hard water at 179 mg/L with elevated TDS of 465.1 mg/L, approaching the ADWG aesthetic guideline, reflecting the Darling Ranges surface and limestone groundwater IWSS blend.