Water hardness in Goulburn
200 mg/L very hard
Tap water in Goulburn is very hard: 200 mg/L (11.7 gpg · 11.2 °dH · 20 °fH).
Source: Goulburn Mulwaree Council, Water Supply Services (treated water hardness) (date not specified) · data checked 2026-11-12
Range across supply zones: 150–250 mg/L.
Australian Drinking Water Guidelines: aesthetic target ≤ 200 mg/L CaCO₃.
Water data
| Total hardness | 200 mg/L |
|---|---|
| Utility | Goulburn Mulwaree Council |
How Goulburn compares
- Tap water in Goulburn is 135 % harder than the median of the 307 cities we track in Australia (85 mg/L).
- By hardness it ranks 29 of 307 in Australia (1 = hardest); 91 % of these cities have softer water.
- In New South Wales it is number 1 of 13 cities; the regional median is 93 mg/L.
- Nearest city with clearly softer water: Young, 139 km away (88 mg/L).
Ranking of the hardest and softest water in Australia →
What it means at home
- Severe scale: heater elements and washing-machine heaters fail early.
- Detergent use is very high; taps and screens coat within days.
- Dishwasher at maximum salt setting.
- An ion-exchange softener is practically essential; RO for drinking water.
How much salt will you use for softening?
Yes. At this hardness a softener pays for itself through appliance life and detergent.
Descale a coffee machine or kettle about every 1 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Goulburn
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 11 °dH |
| AEG / Electrolux | 3 |
| Beko | 3rd |
| Hoover | S2 |
| LG | H2 |
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 Goulburn water hard or soft?
It is very hard: 200 mg/L as CaCO₃ (11.7 gpg, 11.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Goulburn 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 Goulburn water?
11.7 gpg, equal to 11.2 °dH, 20 °fH or 200 mg/L calcium carbonate.
What dishwasher salt setting should I use in Goulburn?
For 200 mg/L (11.2 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Goulburn?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Goulburn Mulwaree Council, Water Supply Services (treated water hardness) (date not specified). Method: figure published by the water supplier. Goulburn Mulwaree Council, Water Supply Services (treated water hardness) · Outdated figure? Tell us