Minto 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
169.8 mg/L
Est. Daily Cost
A$0.28
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 Minto, your appliances are currently losing 12% efficiency due to mineral buildup.
| Appliance | In Minto | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.7 yrs | 8.5 yrs | -21% |
| Washing Machine | 10.3 yrs | 12 yrs | -14% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How Minto compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Minto, New South Wales | 89 mg/L | 🟡 Moderately Hard | reservoir |
| Ingleburn, New South Wales | 93.5 mg/L | 🟡 Moderately Hard | reservoir |
| Campbelltown, New South Wales | 61 mg/L | 🟡 Moderately Hard | reservoir |
| Macquarie Fields, New South Wales | 160 mg/L | 🟠 Hard | reservoir |
| Mount Annan, New South Wales | 198 mg/L | 🔴 Very Hard | reservoir |
National Benchmark
How Minto compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Minto | 89 mg/L | 🟡 Low |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Minto's Water Unique?
Local geology and source profile
Minto's drinking water is supplied by Sydney Water, treated at the Prospect Water Filtration Plant drawing predominantly from Warragamba Dam (Nepean River system) for the Campbelltown City LGA outer south-western Sydney distribution in New South Wales. Water hardness in Minto is measured at 89 mg/L — classified as slightly hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Minto — a large outer south-western Sydney suburb in the Campbelltown LGA on the Hume Highway corridor, known for the Minto Marketplace shopping centre, the Minto industrial estate, the major residential estates along the East Hills rail line, and the outer south-western Sydney residential growth community at the edge of the Macarthur region — receives slightly elevated supply at an intermediate hardness between the varied Campbelltown LGA supply sub-zones.
Minto's slightly elevated hardness reflects an intermediate Warragamba Dam and Hawkesbury-Nepean blend at this outer south-western Campbelltown Prospect distribution sub-zone. The Minto distribution at 89 mg/L and TDS 169.8 mg/L sits between the very soft Campbelltown CBD sub-zone (61 mg/L) and the hard Macquarie Fields sub-zone (160 mg/L) in the same Campbelltown LGA, demonstrating the dramatic supply blend variation characteristic of the outer south-western Sydney Campbelltown distribution network, where different distribution main routings deliver significantly different Warragamba-to-Nepean blend ratios across the same LGA.
Minto 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 low lead reading (0.003 mg/L) is good. Sydney Water provides water quality information at sydneywater.com.au, with all ADWG health standards consistently met. Minto's Macarthur regional residential community and the Minto Marketplace shopping precinct benefit from a safe supply meeting all ADWG standards.
Geology & Source: Supplied by Sydney Water via the Prospect Water Filtration Plant drawing predominantly from Warragamba Dam — the Minto Campbelltown outer south-western Sydney supply carries slightly hard water at 89 mg/L with TDS of 169.8 mg/L, softer than Macquarie Fields (160 mg/L) but harder than Campbelltown CBD (61 mg/L) in the same Campbelltown LGA, reflecting an intermediate Warragamba–Hawkesbury-Nepean supply blend at this Minto distribution sub-zone.