Water hardness in Bühl (Baden)
6.2 °dH moderately hard
Tap water in Bühl (Baden) is moderately hard: 6.2 °dH (110 mg/L · 6.4 gpg · 11 °fH).
Source: Stadtwerke Bühl Jahresmittelwerte 2025 Balzhofen (2025) · data checked 2026-10-23
Range across supply zones: 71–155 mg/L.
6 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Balzhofen | 7.6 | 136 | hard |
| Frankenbach | 4 | 71 | moderately hard |
| Grunmatt | 4.3 | 77 | moderately hard |
| HB Hollebach | 8.3 | 148 | hard |
| HB Rappenberg | 8.7 | 155 | hard |
| Immenstein | 4.7 | 84 | moderately hard |
Stadtwerke Bühl publishes annual mean values for 2025 for six supply points. They run from 71.4 mg/L CaCO₃ in Frankenbach to 155.3 mg/L at the Rappenberg tank, and the city figure is 109.8 mg/L. Look up the supply point for your district, since the values roughly double across the range.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 6.2 °dH |
|---|---|
| Utility | Stadtwerke Bühl GmbH |
How Bühl (Baden) compares
- Tap water in Bühl (Baden) is 47 % softer than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 691 of 809 in Germany (1 = hardest); 14 % of these cities have softer water.
- In Baden-Württemberg it is number 132 of 146 cities; the regional median is 12.8 °dH.
- Nearest city with clearly softer water: Forbach (Murgtal), 16 km away (4.5 °dH).
- Nearest city with clearly harder water: Sasbach, 6 km away (9 °dH).
Ranking of the hardest and softest water in Germany →
What it means at home
- Visible kettle scale every few weeks; vinegar or citric acid is enough.
- Water heater and washing machine: some long-term scale; a scale inhibitor slows it.
- Dishwasher: medium salt setting.
- Softener optional; pays off mainly with a gas boiler or tankless heater.
How much salt will you use for softening?
Optional. A scale inhibitor or a small softener protects the heater; soap savings are modest.
Descale a coffee machine or kettle about every 3 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Bühl (Baden)
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 6 °dH |
| AEG / Electrolux | 2 |
| Beko | 2nd |
| Hoover | S1 |
| LG | H1 |
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 Bühl (Baden) water hard or soft?
It is moderately hard: 110 mg/L as CaCO₃ (6.4 gpg, 6.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Bühl (Baden) 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 Bühl (Baden) water?
6.4 gpg, equal to 6.2 °dH, 11 °fH or 110 mg/L calcium carbonate.
What dishwasher salt setting should I use in Bühl (Baden)?
For 110 mg/L (6.2 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Bühl (Baden)?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Stadtwerke Bühl Jahresmittelwerte 2025 Balzhofen (2025). Method: figure published by the water supplier. Stadtwerke Bühl Jahresmittelwerte 2025 Balzhofen · Outdated figure? Tell us