Kambah Water Hardness & Quality Report (2026)
Water Hardness
Source
reservoir
pH Level
7.4
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
64 mg/L
Est. Daily Cost
A$0.10
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 Kambah, your appliances are currently losing 4% efficiency due to mineral buildup.
| Appliance | In Kambah | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.6 yrs | 8.5 yrs | — |
| Washing Machine | 12.5 yrs | 12 yrs | — |
| Water Heater | 14.4 yrs | 15 yrs | -4% |
Regional Water Comparison
How Kambah compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Kambah, Australian Capital Territory | 30 mg/L | 🟢 Soft | reservoir |
| Tuggeranong Administrative District, Australian Capital Territory | 37 mg/L | 🟢 Soft | reservoir |
| Canberra, Australian Capital Territory | 25 mg/L | 🟢 Soft | reservoir |
| Ngunnawal, Australian Capital Territory | 39.5 mg/L | 🟢 Soft | reservoir |
| Goulburn, New South Wales | 60.5 mg/L | 🟡 Moderately Hard | reservoir |
National Benchmark
How Kambah compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Kambah | 30 mg/L | 🟢 None |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Kambah's Water Unique?
Local geology and source profile
Kambah's drinking water is supplied by Icon Water, drawing from the Cotter Reservoir system (including Enlarged Cotter Dam) and Googong Reservoir on the Queanbeyan River for the Australian Capital Territory, distributed to the Tuggeranong Valley in the ACT. Water hardness in Kambah is measured at 30 mg/L — classified as soft — far below the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Kambah — the Tuggeranong District's largest and most established suburb, known for the Kambah Pool nature reserve on the Murrumbidgee River, the Mount Stranger and Pine Island nature corridor, the Kambah Village shopping precinct, and the Tuggeranong Valley's diverse residential character — receives the characteristically soft ACT supply from Canberra's granite-terrain upland reservoirs.
Kambah's soft supply reflects the Ordovician granodiorite and quartz-rich metamorphic terrain of the ACT upland catchments. The Cotter River and Queanbeyan River headwaters drain across the Brindabella Ranges — Ordovician granodiorite and quartz-rich metamorphic basement resistant to mineral dissolution — producing characteristically soft, low-mineral water. The ACT's upland catchment system delivers 30 mg/L and TDS 64 mg/L to the Tuggeranong Valley Kambah distribution, consistent with Icon Water's typical supply range of 25–37 mg/L across all ACT sub-zones.
Kambah residents enjoy very low limescale accumulation on taps, in kettles, and around shower fittings — descaling is an occasional rather than regular task. Hot water systems accumulate minimal scale. The elevated lead reading (0.004 mg/L) warrants briefly running the cold tap before use in older Kambah properties within this large Tuggeranong suburb. Icon Water provides water quality information at iconwater.com.au, with all ADWG health standards consistently met. The soft supply is a practical benefit for Kambah's large Tuggeranong Valley community and the popular Murrumbidgee River corridor recreational precinct.
Geology & Source: Supplied by Icon Water from the Cotter Reservoir system and Googong Reservoir on the Queanbeyan River — the Kambah ACT Tuggeranong Valley supply carries soft water at 30 mg/L with low TDS of 64 mg/L, reflecting the Ordovician granodiorite and metamorphic terrain of the ACT upland catchments that produces the characteristically soft, low-mineral supply for the Australian Capital Territory.