Alice Springs Water Hardness & Quality Report (2026)
Water Hardness
Source
groundwater
pH Level
7.9
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
700 mg/L
Est. Daily Cost
A$1.01
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 Alice Springs, your appliances are currently losing 43% efficiency due to mineral buildup.
| Appliance | In Alice Springs | 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 Alice Springs compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Alice Springs, Northern Territory | 320 mg/L | 🔴 Very Hard | groundwater |
| Mount Isa, Queensland | 133.5 mg/L | 🟠 Hard | mixed |
| Port Augusta, South Australia | 294.5 mg/L | 🔴 Very Hard | mixed |
| Port Pirie, South Australia | 292 mg/L | 🔴 Very Hard | mixed |
| Port Lincoln, South Australia | 293 mg/L | 🔴 Very Hard | mixed |
National Benchmark
How Alice Springs compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Alice Springs | 320 mg/L | 🔴 High |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Alice Springs's Water Unique?
Local geology and source profile
Alice Springs's drinking water is supplied by the Power and Water Corporation, drawn from the Amadeus Basin groundwater system via the Roe Creek borefield south of the town and supplementary extraction from the Amadeus Limestone aquifer beneath the Central Australian basin in the Northern Territory. Water hardness in Alice Springs is measured at 320 mg/L — classified as very hard, significantly exceeding the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. The TDS of 700 mg/L reflects the highly mineralised character of the deep Central Australian aquifer system, making Alice Springs one of the hardest urban water supplies in Australia.
Alice Springs's extreme hardness directly reflects the geology of the Amadeus Basin aquifer system. Groundwater percolates through ancient Proterozoic–Cambrian limestone, dolomite, and evaporite formations of the Amadeus Basin — some of Australia's oldest carbonate sequences — where calcium and magnesium dissolve readily over the extended groundwater residence periods characteristic of arid-zone aquifers. The MacDonnell Ranges folded quartzite and metamorphic terrains provide limited recharge, while the Amadeus Limestone and Pertnjara Group evaporites saturate extracted groundwater with dissolved minerals before treatment.
Alice Springs residents deal with the most severe limescale conditions of any Australian inland city — kettles require weekly descaling, shower screens accumulate thick carbonate film within days, and hot water system elements fail within three to five years without regular maintenance. Evaporative coolers, essential in the arid Centre's hot climate, accumulate heavy scale on pads and require frequent seasonal servicing. The Power and Water Corporation provides water quality information at powerwater.com.au, with ADWG health standards met. A whole-house water softener is a standard investment for Alice Springs households managing the country's most challenging hard water supply.
Geology & Source: Supplied by the Power and Water Corporation from the Amadeus Basin groundwater via the Roe Creek borefield and Amadeus Limestone aquifer system south of Alice Springs — water percolating through ancient Proterozoic–Palaeozoic limestone, dolomite, and evaporite formations of the Central Australian Basin dissolves extreme quantities of calcium and magnesium, producing very hard supply at 320 mg/L with high TDS of 700 mg/L.