Water hardness in Fellbach
11.1 °dH very hard
Tap water in Fellbach is very hard: 11.1 °dH (199 mg/L · 11.6 gpg · 19.9 °fH).
Source: Stadtwerke Fellbach - Wasseranalyse 2023 (2023) · data checked 2026-10-23
Range across supply zones: 161–237 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Fellbach (Landeswasserversorgung) | 13.3 | 237 | very hard |
| Schmiden/Öffingen (Bodenseewasserversorgung) | 9 | 161 | hard |
Stadtwerke Fellbach publishes a 2023 water analysis, so this figure is older than most and may have shifted since. Fellbach itself is supplied with Landeswasser at 237.4 mg/L CaCO₃, while Schmiden and Öffingen get Lake Constance water at 160.7 mg/L. The town figure is 199.0 mg/L, and your district decides where you fall in that range. Ask the utility for the current analysis before making a purchase.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 11.1 °dH |
|---|---|
| Utility | Stadtwerke Fellbach |
How Fellbach compares
- Tap water in Fellbach is close to the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 429 of 809 in Germany (1 = hardest); 47 % of these cities have softer water.
- In Baden-Württemberg it is number 86 of 146 cities; the regional median is 12.8 °dH.
- Nearest city with clearly softer water: Leonberg, 18 km away (8.9 °dH).
- Nearest city with clearly harder water: Schwaikheim, 15 km away (16.5 °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 Fellbach
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 11 °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 Fellbach water hard or soft?
It is very hard: 199 mg/L as CaCO₃ (11.6 gpg, 11.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Fellbach 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 Fellbach water?
11.6 gpg, equal to 11.1 °dH, 19.9 °fH or 199 mg/L calcium carbonate.
What dishwasher salt setting should I use in Fellbach?
For 199 mg/L (11.1 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Fellbach?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Stadtwerke Fellbach - Wasseranalyse 2023 (2023). Method: figure published by the water supplier. Stadtwerke Fellbach - Wasseranalyse 2023 · Outdated figure? Tell us