Mackay Water Hardness & Quality Report (2026)
Water Hardness
Source
mixed
pH Level
7.3
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
151.1 mg/L
Est. Daily Cost
A$0.21
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 Mackay, your appliances are currently losing 9% efficiency due to mineral buildup.
| Appliance | In Mackay | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 7.4 yrs | 8.5 yrs | -13% |
| Washing Machine | 11.1 yrs | 12 yrs | -8% |
| Water Heater | 12.9 yrs | 15 yrs | -14% |
Regional Water Comparison
How Mackay compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Mackay, Queensland | 67.5 mg/L | 🟡 Moderately Hard | mixed |
| Townsville, Queensland | 65 mg/L | 🟡 Moderately Hard | river |
| Cairns, Queensland | 50 mg/L | 🟢 Soft | river |
| Sunshine Coast, Queensland | 75 mg/L | 🟡 Moderately Hard | reservoir |
| Toowoomba, Queensland | 180 mg/L | 🔴 Very Hard | reservoir |
National Benchmark
How Mackay compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Mackay | 67.5 mg/L | 🟡 Low |
| Australia National Avg | 81 mg/L | 🟡 Low |
| Hobart Top Rated | 11 mg/L | 🟢 None |
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What Makes Mackay's Water Unique?
Local geology and source profile
Mackay's drinking water is supplied by Mackay Regional Council Water, sourced from the Kinchant Dam and Teemburra Dam on the Pioneer River catchment in the Clarke Range, central Queensland, with Kinchant Dam serving as the primary raw water storage for the region. Water hardness in Mackay is measured at 68 mg/L — classified as slightly hard — within the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. The tropical catchment provides reliable inflows during the summer wet season.
Mackay's moderate hardness is shaped by the Clarke Range's geological character. The Pioneer River catchment drains through tropical basalt and granite of the Clarke and Connors Ranges — weathered volcanic and igneous rocks that release modest but consistent quantities of calcium and magnesium. High seasonal rainfall across the catchment during the wet season dilutes the mineral load, while lower flows during the dry season allow slightly elevated hardness to develop in storage as concentration increases.
Mackay residents experience light to moderate limescale accumulation on taps and in kettles, with descaling typically needed every two to three months. Hot water systems may accumulate some scale on heating elements over time, and an annual inspection is worthwhile given Mackay's warm climate, which accelerates scale precipitation from heated water. Under Queensland water restrictions, which apply during extended dry periods, residents are encouraged to limit outdoor watering and adopt water-efficient practices — an important consideration given Mackay's reliance on seasonal wet-season rainfall to replenish its Pioneer River storage catchments each year.
Geology & Source: Supplied by Mackay Regional Council Water from the Kinchant Dam and Teemburra Dam on the Pioneer River catchment — water draining through tropical basalt and granite of the Clarke Range dissolves moderate mineral content, producing mildly hard supply at 68 mg/L.