Water hardness in Weißenhorn
16.7 °dH very hard
Tap water in Weißenhorn is very hard: 16.7 °dH (298 mg/L · 17.4 gpg · 29.8 °fH).
Source: Stadt Weißenhorn – Infobroschüre (Wasserhärtegrad) (2016) · data checked 2026-10-29
Range across supply zones: 216–375 mg/L.
3 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Biberachzell, Ober- und Unterreichenbach | 12.1 | 216 | very hard |
| Oberhausen und Wallenhausen (Rauher-Berg-Gruppe) | 16.7 | 298 | very hard |
| Weißenhorn und übrige Stadtteile | 21 | 375 | very hard |
This figure is over 3 years old; hardness may have changed.
Stadt Weißenhorn's information brochure from 2016 lists three areas: 216.0 mg/L CaCO₃ for Biberachzell and the Reichenbach villages, 298.1 mg/L for Oberhausen and Wallenhausen, and 374.9 mg/L for Weißenhorn and the remaining districts. The city figure of 298.1 mg/L is the middle one. The brochure is several years old, so ask Stadtwerke Weißenhorn whether the values still apply.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 16.7 °dH |
|---|---|
| Utility | Stadtwerke Weißenhorn |
How Weißenhorn compares
- Tap water in Weißenhorn is 45 % harder than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 195 of 809 in Germany (1 = hardest); 76 % of these cities have softer water.
- In Bayern it is number 61 of 137 cities; the regional median is 15.8 °dH.
- Nearest city with clearly softer water: Augsburg, 55 km away (13.2 °dH).
- Nearest city with clearly harder water: Höchstädt an der Donau, 45 km away (21.8 °dH).
Ranking of the hardest and softest water in Germany →
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 Weißenhorn
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 17 °dH |
| AEG / Electrolux | 4 |
| Beko | 5th |
| Hoover | S2 |
| 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 Weißenhorn water hard or soft?
It is very hard: 298 mg/L as CaCO₃ (17.4 gpg, 16.7 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Weißenhorn safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
How many grains per gallon is Weißenhorn water?
17.4 gpg, equal to 16.7 °dH, 29.8 °fH or 298 mg/L calcium carbonate.
What dishwasher salt setting should I use in Weißenhorn?
For 298 mg/L (16.7 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Weißenhorn?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Stadt Weißenhorn – Infobroschüre (Wasserhärtegrad) (2016). Method: figure published by the water supplier. Stadt Weißenhorn – Infobroschüre (Wasserhärtegrad) · Outdated figure? Tell us