Water hardness in Capalaba
68 mg/L moderately hard
Tap water in Capalaba is moderately hard: 68 mg/L (4 gpg · 3.8 °dH · 6.8 °fH).
Source: Seqwater, Water quality report – Redland (12 months to 2026-09) (2026-09) · data checked 2026-10-20
Range across supply zones: 13–120 mg/L.
This area is supplied through Seqwater's South East Queensland water grid, which links dams, treatment plants and a desalination plant. The reported hardness is 68.0 mg/L CaCO₃, with measurements from 13.0 to 120.0 mg/L. Kettles and shower screens collect some limescale over time, and regular descaling is usually enough.
Australian Drinking Water Guidelines: aesthetic target ≤ 200 mg/L CaCO₃.
Water data
| Total hardness | 68 mg/L |
|---|---|
| Utility | Seqwater (bulk supply) |
How Capalaba compares
- Tap water in Capalaba is 20 % softer than the median of the 307 cities we track in Australia (85 mg/L).
- By hardness it ranks 180 of 307 in Australia (1 = hardest); 41 % of these cities have softer water.
- In Queensland it is number 13 of 29 cities; the regional median is 68 mg/L.
- Nearest city with clearly softer water: Gold Coast, 56 km away (38 mg/L).
- Nearest city with clearly harder water: Brisbane, 19 km away (117 mg/L).
Ranking of the hardest and softest water in Australia →
What it means at home
- Visible kettle scale every few weeks; vinegar or citric acid is enough.
- Water heater and washing machine: some long-term scale; a scale inhibitor slows it.
- Dishwasher: medium salt setting.
- Softener optional; pays off mainly with a gas boiler or tankless heater.
How much salt will you use for softening?
Optional. A scale inhibitor or a small softener protects the heater; soap savings are modest.
Descale a coffee machine or kettle about every 3 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Capalaba
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 4 °dH |
| AEG / Electrolux | 2 |
| Beko | 1st |
| Hoover | S1 |
| LG | H1 |
From each brand's manual for the model family named in the source; your model may differ, so check its manual. All brands and how to change the setting →
FAQ
Is Capalaba water hard or soft?
It is moderately hard: 68 mg/L as CaCO₃ (4 gpg, 3.8 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Capalaba safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Australian Drinking Water Guidelines: aesthetic target ≤ 200 mg/L CaCO₃.
How many grains per gallon is Capalaba water?
4 gpg, equal to 3.8 °dH, 6.8 °fH or 68 mg/L calcium carbonate.
What dishwasher salt setting should I use in Capalaba?
For 68 mg/L (3.8 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Capalaba?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Seqwater, Water quality report – Redland (12 months to 2026-09) (2026-09). Method: figure published by the water supplier. Seqwater, Water quality report – Redland (12 months to 2026-09) · Outdated figure? Tell us