Ashfield Water Hardness & Quality Report (2026)
Water Hardness
Source
reservoir
pH Level
7.2
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
83.7 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 Ashfield, your appliances are currently losing 6% efficiency due to mineral buildup.
| Appliance | In Ashfield | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8 yrs | 8.5 yrs | -6% |
| Washing Machine | 11.8 yrs | 12 yrs | -2% |
| Water Heater | 13.7 yrs | 15 yrs | -9% |
Regional Water Comparison
How Ashfield compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Ashfield, New South Wales | 48.5 mg/L | 🟢 Soft | reservoir |
| Croydon, New South Wales | 51.5 mg/L | 🟢 Soft | reservoir |
| Dulwich Hill, New South Wales | 172.5 mg/L | 🟠 Hard | reservoir |
| Burwood, New South Wales | 89.5 mg/L | 🟡 Moderately Hard | reservoir |
| Campsie, New South Wales | 147 mg/L | 🟠 Hard | reservoir |
National Benchmark
How Ashfield compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Ashfield | 48.5 mg/L | 🟢 None |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
Bring Boronia-quality water to your Ashfield home
Shop water softeners on Amazon.com →
What Makes Ashfield's Water Unique?
Local geology and source profile
Ashfield's drinking water is supplied by Sydney Water, treated at the Prospect Water Filtration Plant primarily drawing from Warragamba Dam and the integrated Hawkesbury-Nepean reservoir system, serving the Inner West Council LGA in New South Wales. Water hardness in Ashfield is measured at 48.5 mg/L — classified as soft — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Ashfield, in Sydney's inner west LGA, receives a Warragamba-dominant supply blend that produces softness representative of the standard Sydney supply character — notably softer than adjacent Strathfield (152 mg/L) and Marrickville (167 mg/L) despite their similar inner-west LGA proximity.
Ashfield's soft supply reflects the predominantly Warragamba Dam component in the local Prospect plant distribution blend. Warragamba Dam draws from the Blue Mountains and Southern Highlands catchment draining through Triassic Hawkesbury Sandstone — silica-rich, calcium-poor formations that resist chemical weathering and contribute negligible dissolved minerals. The specific Ashfield distribution node receives a proportionally higher Warragamba fraction than adjacent harder inner-west zones, producing the 48.5 mg/L near-standard Sydney softness at the Ashfield tap.
Ashfield residents enjoy low limescale accumulation on taps, in kettles, and around shower fittings — descaling every two to three months is generally adequate. Hot water systems accumulate minimal scale throughout their service life. Sydney Water provides water quality information at sydneywater.com.au, with all ADWG health standards consistently met. The soft supply is an everyday benefit in Ashfield's cosmopolitan inner-west community, which includes a large Chinese and Portuguese-speaking community well served by Sydney Water's multilingual information services.
Geology & Source: Supplied by Sydney Water from the Warragamba Dam and Prospect Water Filtration Plant serving the Inner West Sydney distribution zone — the Ashfield supply carries soft water at 48.5 mg/L, consistent with the Warragamba-dominant Prospect plant blend reaching this inner western Sydney distribution sub-zone, typical of the characteristically soft standard Sydney supply.