Water hardness in Bischwiller
41.2 °fH very hard
Tap water in Bischwiller is very hard: 41.2 °fH (412 mg/L · 24.1 gpg · 23.1 °dH).
Source: Ministère de la Santé (ARS), contrôle sanitaire SISE-Eaux, commune 67046 (2026-08) · data checked 2026-10-19
Bischwiller (Bas-Rhin) is served by the Communauté d'Agglomération de Haguenau. The ARS health control (SISE-Eaux, August 2026) records 412 mg/L CaCO₃, the highest value in this batch. No range is published.
TH en °fH : douce < 15, moyennement dure 15–25, dure 25–35, très dure > 35 °fH (classes usuelles ARS).
Water data
| Total hardness | 41.2 °fH |
|---|---|
| Utility | Communauté D’Agglomération De Haguenau |
How Bischwiller compares
- Tap water in Bischwiller is 72 % harder than the median of the 33641 cities we track in France (23.9 °fH).
- By hardness it ranks 568 of 33641 in France (1 = hardest); 98 % of these cities have softer water.
- In Bas-Rhin it is number 4 of 496 cities; the regional median is 19.5 °fH.
- Nearest city with clearly softer water: Oberhoffen-sur-Moder, 2 km away (31.6 °fH).
- Nearest city with clearly harder water: Blanche-Église, 87 km away (53.4 °fH).
Ranking of the hardest and softest water in France →
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 Bischwiller
| Brand | Setting for this water |
|---|---|
| Bosch | H06 |
| Miele | 23 °dH |
| AEG / Electrolux | 6 |
| Beko | 6th |
| Hoover | S3 |
| LG | H4 |
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 Bischwiller water hard or soft?
It is very hard: 412 mg/L as CaCO₃ (24.1 gpg, 23.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Bischwiller safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. TH en °fH : douce < 15, moyennement dure 15–25, dure 25–35, très dure > 35 °fH (classes usuelles ARS).
How many grains per gallon is Bischwiller water?
24.1 gpg, equal to 23.1 °dH, 41.2 °fH or 412 mg/L calcium carbonate.
What dishwasher salt setting should I use in Bischwiller?
For 412 mg/L (23.1 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Bischwiller?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Ministère de la Santé (ARS), contrôle sanitaire SISE-Eaux, commune 67046 (2026-08). Method: own measurement. Ministère de la Santé (ARS), contrôle sanitaire SISE-Eaux, commune 67046 · Outdated figure? Tell us