Water hardness in Ludwigsburg
11.2 °dH very hard
Tap water in Ludwigsburg is very hard: 11.2 °dH (201 mg/L · 11.7 gpg · 20.1 °fH).
Source: SWLB Analyse des Trinkwassers, Jahresmittelwerte 2024 (2024) · data checked 2026-10-20
Range across supply zones: 162–239 mg/L.
Stadtwerke Ludwigsburg-Kornwestheim reports annual means for 2024 for a supply that mixes two long-distance water sources (BWV and Landeswasserversorgung). The published range is 162.4 to 239.2 mg/L CaCO₃, and the city figure of 200.8 mg/L is computed from it, not a printed average. The same water also serves Kornwestheim. The mix can change from year to year, so check the latest SWLB analysis.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 11.2 °dH |
|---|---|
| Utility | Stadtwerke Ludwigsburg-Kornwestheim (SWLB) |
How Ludwigsburg compares
- Tap water in Ludwigsburg is close to the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 427 of 809 in Germany (1 = hardest); 47 % of these cities have softer water.
- In Baden-Württemberg it is number 85 of 146 cities; the regional median is 12.8 °dH.
- Nearest city with clearly softer water: Leonberg, 17 km away (8.9 °dH).
- Nearest city with clearly harder water: Bietigheim-Bissingen, 7 km away (17.3 °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 Ludwigsburg
| 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 Ludwigsburg water hard or soft?
It is very hard: 201 mg/L as CaCO₃ (11.7 gpg, 11.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Ludwigsburg 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 Ludwigsburg water?
11.7 gpg, equal to 11.2 °dH, 20.1 °fH or 201 mg/L calcium carbonate.
What dishwasher salt setting should I use in Ludwigsburg?
For 201 mg/L (11.2 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Ludwigsburg?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: SWLB Analyse des Trinkwassers, Jahresmittelwerte 2024 (2024). Method: computed from supplier's calcium and magnesium. SWLB Analyse des Trinkwassers, Jahresmittelwerte 2024 · Outdated figure? Tell us