Regents Park Water Hardness & Quality Report (2026)
Water Hardness
Source
mixed
pH Level
7.8
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
418.4 mg/L
Est. Daily Cost
A$0.60
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 Regents Park, your appliances are currently losing 25% efficiency due to mineral buildup.
| Appliance | In Regents Park | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 3.3 yrs | 8.5 yrs | -61% |
| Washing Machine | 6.6 yrs | 12 yrs | -45% |
| Water Heater | 8 yrs | 15 yrs | -47% |
Regional Water Comparison
How Regents Park compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Regents Park, Queensland | 190 mg/L | 🔴 Very Hard | mixed |
| Parkinson, Queensland | 285.5 mg/L | 🔴 Very Hard | mixed |
| Crestmead, Queensland | 279 mg/L | 🔴 Very Hard | mixed |
| Calamvale, Queensland | 274 mg/L | 🔴 Very Hard | mixed |
| Marsden, Queensland | 280 mg/L | 🔴 Very Hard | mixed |
National Benchmark
How Regents Park compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Regents Park | 190 mg/L | 🔴 High |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Regents Park's Water Unique?
Local geology and source profile
Regents Park's drinking water is supplied by Logan Water (Logan City Council's water utility), with bulk supply from Seqwater incorporating dominant Lockyer Valley groundwater supplementation through the south-east Queensland water grid for the Logan City Council LGA outer southern Brisbane distribution in Queensland. Water hardness in Regents Park is measured at 190 mg/L — classified as hard, approaching the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Regents Park — a residential suburb in the Logan City LGA adjacent to Browns Plains, Woodridge, and Underwood, known for the Regents Park residential community on the Kingston-Regents Park residential corridor, the Wembley Road industrial estate, and the outer southern Brisbane residential community of the Logan City corridor between Woodridge and Browns Plains — receives hard supply approaching the ADWG aesthetic guideline, consistent with Logan City Council's broader hard SEQ supply profile.
Regents Park's elevated hardness reflects the dominant Lockyer Valley groundwater proportion in the Logan City SEQ supply blend at this outer southern Brisbane sub-zone. The Lockyer Valley alluvial aquifer percolates through highly mineralised Jurassic–Cretaceous carbonate-cemented Darling Downs formations, accumulating high dissolved calcium, magnesium, and carbonates. At 190 mg/L and TDS 418.4 mg/L, the Regents Park Logan City supply approaches the ADWG 200 mg/L aesthetic guideline, consistent with other Logan City hard water sub-zones (Shailer Park 232 mg/L, Crestmead 279 mg/L) and the broader SEQ Lockyer Valley groundwater-driven hard water supply profile.
Regents Park residents face moderate-to-significant limescale on taps and in kettles — descaling every four to six weeks is typical. Hot water systems benefit from regular inspection. Under Queensland water restrictions, outdoor watering is regulated. The very low lead reading (0.001 mg/L) is excellent. Logan Water provides water quality information at loganwater.com.au, with all ADWG health standards consistently met. Regents Park's outer southern Brisbane residential community benefits from supply meeting all ADWG safe drinking standards.
Geology & Source: Supplied by Logan Water (Logan City Council's water utility) with bulk supply from Seqwater via dominant Lockyer Valley groundwater supplementation through the SEQ Water Grid — the Regents Park Logan City supply carries hard water at 190 mg/L with TDS of 418.4 mg/L, approaching the ADWG aesthetic guideline of 200 mg/L, reflecting the Lockyer Valley groundwater proportion in the Logan City outer southern Brisbane distribution sub-zone.