Bossley Park Water Hardness & Quality Report (2026)
Water Hardness
Source
reservoir
pH Level
7.5
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
184.9 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 Bossley Park, your appliances are currently losing 13% efficiency due to mineral buildup.
| Appliance | In Bossley Park | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.4 yrs | 8.5 yrs | -25% |
| Washing Machine | 10.1 yrs | 12 yrs | -16% |
| Water Heater | 11.8 yrs | 15 yrs | -21% |
Regional Water Comparison
How Bossley Park compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Bossley Park, New South Wales | 95.5 mg/L | 🟡 Moderately Hard | reservoir |
| Fairfield West, New South Wales | 107.5 mg/L | 🟡 Moderately Hard | reservoir |
| Green Valley, New South Wales | 122 mg/L | 🟠 Hard | reservoir |
| Canley Heights, New South Wales | 147 mg/L | 🟠 Hard | reservoir |
| Smithfield, New South Wales | 54.5 mg/L | 🟢 Soft | reservoir |
National Benchmark
How Bossley Park compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Bossley Park | 95.5 mg/L | 🟡 Low |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Bossley Park's Water Unique?
Local geology and source profile
Bossley Park's drinking water is supplied by Sydney Water, treated at the Prospect Water Filtration Plant blending Warragamba Dam with a moderate Hawkesbury-Nepean component for the Fairfield LGA outer south-western Sydney distribution in New South Wales. Water hardness in Bossley Park is measured at 95.5 mg/L — classified as slightly hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Bossley Park — a large outer south-western Sydney suburb in the Fairfield LGA, known for the Bossley Park shops on Edensor Road, the extensive residential estates, and the multicultural family community of the Fairfield City corridor — receives supply substantially harder than the soft Fairfield city centre sub-zone (28 mg/L) in the same Fairfield LGA, demonstrating the remarkable variation in supply blend across the outer south-western Sydney distribution network.
Bossley Park's slightly elevated hardness reflects a moderate Hawkesbury-Nepean component in the outer south-western Fairfield LGA Prospect distribution blend. The Hawkesbury-Nepean system traverses Cumberland Plain alluvial terrain and Triassic carbonate-cemented sedimentary deposits — dissolving moderate calcium bicarbonate before Prospect treatment. The Bossley Park outer south-west Fairfield distribution sub-zone at 95.5 mg/L and TDS 184.9 mg/L receives a proportionally moderate Hawkesbury-Nepean fraction through a different supply routing than the soft Fairfield city centre zone, reflecting the complex blend geography of the Fairfield LGA outer south-western supply network.
Bossley Park 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 (0.003 mg/L) warrants briefly running the cold tap before use. Sydney Water provides water quality information at sydneywater.com.au, with all ADWG health standards consistently met. The slightly hard supply is within comfortable household use ranges for Bossley Park's multicultural outer south-western Sydney residential community.
Geology & Source: Supplied by Sydney Water via the Prospect Water Filtration Plant blending Warragamba Dam with a moderate Hawkesbury-Nepean component — the Bossley Park Fairfield LGA outer south-western Sydney supply carries slightly hard water at 95.5 mg/L, in marked contrast to the soft Fairfield sub-zone (28 mg/L) in the same Fairfield LGA, demonstrating the dramatic blend variation across the outer south-western Sydney supply network.