Cleveland Water Hardness & Quality Report (2026)
Water Hardness
Source
mixed
pH Level
8.3
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
742.7 mg/L
Est. Daily Cost
A$0.84
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 Cleveland, your appliances are currently losing 35% efficiency due to mineral buildup.
| Appliance | In Cleveland | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 1.5 yrs | 8.5 yrs | -82% |
| Washing Machine | 3.8 yrs | 12 yrs | -68% |
| Water Heater | 5 yrs | 15 yrs | -67% |
Regional Water Comparison
How Cleveland compares to its nearest neighbours
| City | Hardness | Risk | Source |
|---|---|---|---|
| ▶ Cleveland, Queensland | 265 mg/L | 🔴 Very Hard | mixed |
| Thornlands, Queensland | 211 mg/L | 🔴 Very Hard | mixed |
| Alexandra Hills, Queensland | 266 mg/L | 🔴 Very Hard | mixed |
| Wellington Point, Queensland | 207.5 mg/L | 🔴 Very Hard | mixed |
| Capalaba, Queensland | 204.5 mg/L | 🔴 Very Hard | mixed |
National Benchmark
How Cleveland compares to the Australia average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Cleveland | 265 mg/L | 🔴 High |
| Australia National Avg | 125 mg/L | 🟠 Moderate |
| Boronia Top Rated | 5 mg/L | 🟢 None |
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What Makes Cleveland's Water Unique?
Local geology and source profile
Cleveland's drinking water is supplied by Redland City Council Water as water retailer, with bulk supply from Seqwater drawing from Lake Wivenhoe, Lake Somerset, and Lockyer Valley groundwater through the south-east Queensland water grid for the Redland City LGA distribution in Queensland. Water hardness in Cleveland is measured at 265 mg/L — classified as very hard, significantly exceeding the Australian Drinking Water Guidelines (ADWG) aesthetic guideline of 200 mg/L published by NHMRC. Cleveland — the historic administrative centre of Redland City on Moreton Bay, site of Queensland's earliest European settlement outside Brisbane, known for the Cleveland Point lighthouse heritage precinct, the North Stradbroke Island ferry terminal, and the Cleveland township cafés and restaurants on Middle Street — carries very hard supply consistent with the broader Redland City LGA profile.
Cleveland's elevated hardness reflects the dominant Lockyer Valley groundwater supplement proportion in the Redland City SEQ supply blend. Lake Wivenhoe and Somerset draw from Triassic–Jurassic granite terrain contributing moderately soft surface water, but Seqwater's extraction from the Lockyer Valley alluvial aquifer — percolating through mineralised Jurassic–Cretaceous carbonate-cemented formations — elevates the Cleveland distribution to 265 mg/L and TDS 742.7 mg/L. Cleveland's hardness (265 mg/L) is consistent with the northern Redland City sub-zones (Alexandra Hills 266 mg/L, Victoria Point 252.5 mg/L), reflecting the dominant Lockyer Valley proportion across the Redland City distribution network.
Cleveland residents face severe daily limescale challenges — kettle descaling weekly is standard, shower screens and tapware accumulate heavy carbonate deposits, and hot water system elements need annual inspection. 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. Redland City Council provides water quality data online, with all ADWG health standards consistently met throughout the Redland City coastal distribution network.
Geology & Source: Supplied by Redland City Council Water with bulk supply from Seqwater via Lake Wivenhoe and Lake Somerset, supplemented by Lockyer Valley groundwater through the south-east Queensland water grid — the Cleveland Redland City historic coastal supply carries very hard water at 265 mg/L with elevated TDS of 742.7 mg/L, reflecting the dominant Lockyer Valley groundwater proportion in the Redland City distribution.