Port Augusta Water Hardness & Quality Report (2026)
Water Hardness
Source
mixed
pH Level
8.5
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
831.7 mg/L
Est. Daily Cost
A$0.93
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 Port Augusta, your appliances are currently losing 39% efficiency due to mineral buildup.
| Appliance | In Port Augusta | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 3 yrs | 12 yrs | -75% |
| Water Heater | 5 yrs | 15 yrs | -67% |
Regional Water Comparison
How Port Augusta compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Port Augusta, South Australia | 294.5 mg/L | 🔴 Very Hard | mixed |
| Port Pirie, South Australia | 292 mg/L | 🔴 Very Hard | mixed |
| Gawler, South Australia | 320 mg/L | 🔴 Very Hard | mixed |
| Craigmore, South Australia | 212 mg/L | 🔴 Very Hard | mixed |
| Paralowie, South Australia | 328 mg/L | 🔴 Very Hard | mixed |
National Benchmark
How Port Augusta compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Port Augusta | 294.5 mg/L | 🔴 High |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Port Augusta's Water Unique?
Local geology and source profile
Port Augusta's drinking water is supplied by SA Water via the Morgan–Whyalla Pipeline, transferring River Murray water from the south supplemented by local groundwater for the Port Augusta regional city in the Spencer Gulf mid-north of South Australia. Water hardness in Port Augusta is measured at 294.5 mg/L — classified as hard, substantially exceeding the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Port Augusta — the regional city at the head of Spencer Gulf, known as the 'Crossroads of Australia' at the junction of the Stuart, Eyre, and Barrier highways, home to the Australian Arid Lands Botanic Garden and the historic Port Augusta power station precinct — carries very hard supply with extreme TDS of 831.7 mg/L, reflecting the highly mineralised character of the River Murray transfer supply at this remote northern SA regional distribution.
Port Augusta's extreme hardness reflects the dominant River Murray transfer supply via the Morgan–Whyalla Pipeline, the major SA Water infrastructure transporting River Murray water to the Spencer Gulf industrial and regional corridor. The Murray River at Morgan carries heavily mineralised water from catchments traversing Murray–Darling Basin alluvial plains and Eocene marine sedimentary formations. Local groundwater from the Spencer Gulf coastal aquifer contributes additional dissolved minerals, producing Port Augusta's very hard supply at 294.5 mg/L and TDS 831.7 mg/L.
Port Augusta residents face severe daily limescale challenges — kettle descaling weekly is standard, shower screens and tapware accumulate heavy deposits, and hot water systems require frequent inspection. Scale build-up on hot water systems is a major concern given the extreme TDS. The elevated lead reading (0.004 mg/L) warrants briefly running the cold tap before use. SA Water provides water quality data at sawater.com.au, with all ADWG health standards met. Port Augusta's regional community and the Australian Arid Lands Botanic Garden precinct receive supply meeting all ADWG safe drinking standards.
Geology & Source: Supplied by SA Water via the Morgan–Whyalla Pipeline transferring River Murray water supplemented by local groundwater — the Port Augusta Spencer Gulf northern SA regional supply carries very hard water at 294.5 mg/L with extreme TDS of 831.7 mg/L, reflecting the highly mineralised River Murray transfer supply and local Spencer Gulf area groundwater at this remote mid-north SA regional distribution.