Water hardness in Aubange
22.6 °fH very hard
Tap water in Aubange is very hard: 22.6 °fH (226 mg/L · 13.2 gpg · 12.7 °dH).
Source: SPW, qualité de l'eau potable par zone de distribution, année civile 2025 (2025) · data checked 2026-10-19
Range across supply zones: 181–281 mg/L.
SWDE serves this southern corner of Luxembourg province, where limestone and marl of the Lorraine side meet the older Ardennes rocks; the supply mixes several sources, so the water varies from place to place. The 2025 figure is 226.0 mg/L CaCO₃, within a reported range of 180.5 to 281.0 mg/L, so the exact value depends on your street. At this level limescale builds up quickly in kettles, boilers and washing machines, so descaling and a softener are worth considering.
Belgian suppliers report hardness in °f (French degrees); 1 °f = 10 mg/L CaCO₃.
Water data
| Total hardness | 22.6 °fH |
|---|---|
| Utility | SWDE |
How Aubange compares
- Tap water in Aubange is 28 % softer than the median of the 1091 cities we track in Belgium (31.6 °fH).
- By hardness it ranks 726 of 1091 in Belgium (1 = hardest); 33 % of these cities have softer water.
- In Luxembourg it is number 19 of 94 cities; the regional median is 12 °fH.
- Nearest city with clearly softer water: Musson, 7 km away (15.2 °fH).
- Nearest city with clearly harder water: Bellefontaine, 25 km away (28.9 °fH).
Ranking of the hardest and softest water in Belgium →
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 Aubange
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 13 °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 Aubange water hard or soft?
It is very hard: 226 mg/L as CaCO₃ (13.2 gpg, 12.7 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Aubange safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Belgian suppliers report hardness in °f (French degrees); 1 °f = 10 mg/L CaCO₃.
How many grains per gallon is Aubange water?
13.2 gpg, equal to 12.7 °dH, 22.6 °fH or 226 mg/L calcium carbonate.
What dishwasher salt setting should I use in Aubange?
For 226 mg/L (12.7 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Aubange?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: SPW, qualité de l'eau potable par zone de distribution, année civile 2025 (2025). Method: figure published by the water supplier. SPW, qualité de l'eau potable par zone de distribution, année civile 2025 · Outdated figure? Tell us