Water hardness in Köniz
20.7 °fH very hard
Tap water in Köniz is very hard: 20.7 °fH (207 mg/L · 12.1 gpg · 11.6 °dH).
Source: Gemeinde Köniz, Trinkwasserqualität Bereich 1 (Messwerte kantonales Laboratorium Bern, Stand 19.05.2025) (2025-05) · data checked 2026-10-20
Range across supply zones: 180–234 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °fH | mg/L | ||
|---|---|---|---|
| Bereich 1 | 18 | 180 | very hard |
| Bereich 2 | 23.4 | 234 | very hard |
Köniz is supplied in at least two areas with different hardness. Bereich 1 measured 180 mg/L CaCO₃ and Bereich 2 measured 234 mg/L, both from cantonal laboratory tests sampled in March 2025. Check which area your street belongs to on the municipal site before choosing a descaler or softener.
In der Schweiz wird meist in °fH angegeben (1 °fH = 0,56 °dH).
Water data
| Total hardness | 20.7 °fH |
|---|---|
| Utility | Gemeinde Köniz, Wasserversorgung |
How Köniz compares
- Tap water in Köniz is 23 % softer than the median of the 650 cities we track in Switzerland (26.7 °fH).
- By hardness it ranks 486 of 650 in Switzerland (1 = hardest); 25 % of these cities have softer water.
- In BE it is number 55 of 83 cities; the regional median is 23 °fH.
- Nearest city with clearly softer water: Nidau, 26 km away (11.6 °fH).
- Nearest city with clearly harder water: Belp, 8 km away (27.2 °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 Köniz
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 12 °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 Köniz water hard or soft?
It is very hard: 207 mg/L as CaCO₃ (12.1 gpg, 11.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Köniz 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 Köniz water?
12.1 gpg, equal to 11.6 °dH, 20.7 °fH or 207 mg/L calcium carbonate.
What dishwasher salt setting should I use in Köniz?
For 207 mg/L (11.6 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Köniz?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Gemeinde Köniz, Trinkwasserqualität Bereich 1 (Messwerte kantonales Laboratorium Bern, Stand 19.05.2025) (2025-05). Method: own measurement. Gemeinde Köniz, Trinkwasserqualität Bereich 1 (Messwerte kantonales Laboratorium Bern, Stand 19.05.2025) · Outdated figure? Tell us