Marsden Water Hardness & Quality Report (2026)
Water Hardness
Source
mixed
pH Level
8.4
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
810.9 mg/L
Est. Daily Cost
A$0.89
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 Marsden, your appliances are currently losing 37% efficiency due to mineral buildup.
| Appliance | In Marsden | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 3.2 yrs | 12 yrs | -73% |
| Water Heater | 5 yrs | 15 yrs | -67% |
Regional Water Comparison
How Marsden compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Marsden, Queensland | 280 mg/L | 🔴 Very Hard | mixed |
| Crestmead, Queensland | 279 mg/L | 🔴 Very Hard | mixed |
| Kingston, Queensland | 279 mg/L | 🔴 Very Hard | mixed |
| Logan City, Queensland | 223.5 mg/L | 🔴 Very Hard | mixed |
| Woodridge, Queensland | 271 mg/L | 🔴 Very Hard | mixed |
National Benchmark
How Marsden compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Marsden | 280 mg/L | 🔴 High |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Marsden's Water Unique?
Local geology and source profile
Marsden's drinking water is supplied by Logan Water (Logan City Council Water) as water retailer, with bulk supply from Seqwater drawing from Lake Wivenhoe, Lake Somerset, and dominant Lockyer Valley groundwater through the south-east Queensland water grid for the Logan City LGA outer southern Brisbane distribution in Queensland. Water hardness in Marsden is measured at 280 mg/L — classified as very hard, substantially exceeding the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Marsden — a large outer southern Logan City suburb on the Logan River floodplain, known for the Marsden State School precinct, the Browns Plains Road retail corridor, and the rapid residential growth of the Logan urban growth area — carries one of the hardest supplies in the Logan City supply network.
Marsden's extreme hardness reflects the very high Lockyer Valley groundwater proportion in the outer southern Logan City supply blend. Lake Wivenhoe and Somerset contribute moderately soft surface water from Triassic–Jurassic granite terrain of the Great Dividing Range, but Seqwater's very heavy supplementation from the Lockyer Valley alluvial aquifer — percolating through highly mineralised Jurassic–Cretaceous carbonate-cemented Darling Downs formations — elevates the outer southern Logan distribution to 280 mg/L and extreme TDS 810.9 mg/L, among the highest recorded in the Logan City supply network.
Marsden residents face extremely severe daily limescale challenges — kettle descaling weekly is essential, shower screens and hot water elements accumulate heavy scale, and professional annual inspection of water heating systems is strongly recommended. Under Queensland water restrictions, outdoor watering is limited during drought. The elevated lead reading (0.004 mg/L) warrants briefly running the cold tap before use. Logan Water provides water quality data online, with all ADWG health standards consistently met. A whole-house water softener or point-of-use filter system is a worthwhile investment for Marsden's residential community.
Geology & Source: Supplied by Logan Water (Logan City Council) with bulk supply from Seqwater via Lake Wivenhoe and Lake Somerset, supplemented by dominant Lockyer Valley groundwater through the south-east Queensland water grid — the Marsden Logan City outer southern supply carries very hard water at 280 mg/L with extreme TDS of 810.9 mg/L, reflecting the very high Lockyer Valley groundwater proportion in the Logan City distribution.