Water hardness in Hemmingen
11.4 °dH very hard
Tap water in Hemmingen is very hard: 11.4 °dH (204 mg/L · 11.9 gpg · 20.4 °fH).
Source: Gemeinde Hemmingen - Eigenwasser Mittelwertanalyse 2025 (2025) · data checked 2026-11-03
Hemmingen, in the Ludwigsburg district of Baden-Württemberg, publishes a mean analysis for its own water, the Eigenwasser, for 2025. It shows 203.5 mg/L CaCO₃ as a single town-wide value. Several German towns share the name Hemmingen, so check that you mean this one. Descaling a kettle or coffee machine regularly is a sensible habit at this hardness.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 11.4 °dH |
|---|---|
| Utility | Gemeinde Hemmingen (Eigenwasser; Strohgäu-Wasserversorgung, Strowa) |
How Hemmingen compares
- Tap water in Hemmingen is close to the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 407 of 809 in Germany (1 = hardest); 49 % of these cities have softer water.
- In Baden-Württemberg it is number 81 of 146 cities; the regional median is 12.8 °dH.
- Nearest city with clearly softer water: Rutesheim, 7 km away (8.1 °dH).
- Nearest city with clearly harder water: Vaihingen an der Enz, 5 km away (28 °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 Hemmingen
| 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 Hemmingen water hard or soft?
It is very hard: 204 mg/L as CaCO₃ (11.9 gpg, 11.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Hemmingen 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 Hemmingen water?
11.9 gpg, equal to 11.4 °dH, 20.4 °fH or 204 mg/L calcium carbonate.
What dishwasher salt setting should I use in Hemmingen?
For 204 mg/L (11.4 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Hemmingen?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Gemeinde Hemmingen - Eigenwasser Mittelwertanalyse 2025 (2025). Method: figure published by the water supplier. Gemeinde Hemmingen - Eigenwasser Mittelwertanalyse 2025 · Outdated figure? Tell us