Water hardness in Langenthal
31.3 °fH very hard
Tap water in Langenthal is very hard: 31.3 °fH (313 mg/L · 18.3 gpg · 17.5 °dH).
Source: Gemeindeverband Wasserversorgung untere Langete WUL (via SVGW trinkwasser.ch) (2025) · data checked 2026-10-21
Range across supply zones: 309–316 mg/L.
In the canton of Bern, drinking water comes mostly from groundwater and springs, supplemented by lake water in the lake regions. Gemeindeverband Wasserversorgung untere Langete WUL reports a hardness of 312.5 mg/L CaCO₃, with values from 309.0 to 316.0 mg/L depending on the address. Scale forms quickly on heating elements and fittings, so a softener or strict descaling routine is worth considering.
In der Schweiz wird meist in °fH angegeben (1 °fH = 0,56 °dH).
Water data
| Total hardness | 31.3 °fH |
|---|---|
| Utility | Gemeindeverband Wasserversorgung untere Langete WUL |
How Langenthal compares
- Tap water in Langenthal is 17 % harder than the median of the 650 cities we track in Switzerland (26.7 °fH).
- By hardness it ranks 201 of 650 in Switzerland (1 = hardest); 69 % of these cities have softer water.
- In BE it is number 13 of 83 cities; the regional median is 23 °fH.
- Nearest city with clearly softer water: Rütschelen, 5 km away (2.6 °fH).
- Nearest city with clearly harder water: Wauwil, 18 km away (39.1 °fH).
Ranking of the hardest and softest water in Switzerland →
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 Langenthal
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 18 °dH |
| AEG / Electrolux | 4 |
| Beko | 5th |
| Hoover | S3 |
| LG | H3 |
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 Langenthal water hard or soft?
It is very hard: 313 mg/L as CaCO₃ (18.3 gpg, 17.5 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Langenthal safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. In der Schweiz wird meist in °fH angegeben (1 °fH = 0,56 °dH).
How many grains per gallon is Langenthal water?
18.3 gpg, equal to 17.5 °dH, 31.3 °fH or 313 mg/L calcium carbonate.
What dishwasher salt setting should I use in Langenthal?
For 313 mg/L (17.5 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Langenthal?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Gemeindeverband Wasserversorgung untere Langete WUL (via SVGW trinkwasser.ch) (2025). Method: figure published by the water supplier. Gemeindeverband Wasserversorgung untere Langete WUL (via SVGW trinkwasser.ch) · Outdated figure? Tell us