Grafton Water Hardness & Quality Report (2026)
Water Hardness
Source
reservoir
pH Level
7
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
16.3 mg/L
Est. Daily Cost
A$0.16
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 Grafton, your appliances are currently losing 7% efficiency due to mineral buildup.
| Appliance | In Grafton | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8 yrs | 8.5 yrs | -6% |
| Washing Machine | 11.8 yrs | 12 yrs | -2% |
| Water Heater | 13.6 yrs | 15 yrs | -9% |
Regional Water Comparison
How Grafton compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Grafton, New South Wales | 49.56 mg/L | 🟢 Soft | reservoir |
| Coffs Harbour, New South Wales | 51.8 mg/L | 🟢 Soft | reservoir |
| Casino, New South Wales | ≈ 0–60 mg/L | 🟢 Soft | reservoir |
| Goonellabah, New South Wales | ≈ 120–179 mg/L | 🟠 Hard | reservoir |
| Figtree, New South Wales | ≈ 0–60 mg/L | 🟢 Soft | reservoir |
National Benchmark
How Grafton compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Grafton | 49.56 mg/L | 🟢 None |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Grafton's Water Unique?
Local geology and source profile
Clarence Valley Council supplies drinking water to Grafton, New South Wales, drawing from local groundwater sources within the Clarence Valley hydrogeological setting. The utility regularly monitors water quality, and its August 2024 report confirms the supply consistently meets all Australian Drinking Water Guidelines and is safe for consumption. This soft water character means residents experience minimal mineral-related issues compared to hard water areas.
The region's geology produces a soft water supply, with total hardness measured at approximately 49.56 mg/L CaCO₃. This reflects the hydrogeological setting of the Clarence Valley region, where the underlying rock formations contribute to a low mineral content. The groundwater's journey through these formations results in a naturally soft water profile for the community.
As a soft water supply, Grafton residents benefit from reduced scale buildup on appliances and plumbing fixtures. Soft water produces better soap lathering and is gentler on skin and hair. Appliances such as dishwashers, washing machines, and hot water systems will experience minimal scaling and require less frequent maintenance. Clarence Valley Council maintains ongoing monitoring and analysis to ensure continued compliance and safety of the drinking water supply for all residents.
Geology & Source: Clarence Valley groundwater; sedimentary rocks contributing to soft water
Other New South Wales Water Reports
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