Water hardness in Landshut
20.2 °dH very hard
Tap water in Landshut is very hard: 20.2 °dH (361 mg/L · 21.1 gpg · 36.1 °fH).
Source: Stadtwerke Landshut – Trinkwasser-Prüfbericht (Auszug Februar 2026) (2026) · data checked 2026-10-23
Stadtwerke Landshut's test report (excerpt from February 2026) shows 360.6 mg/L CaCO₃, with calcium at 99.8 mg/L and magnesium at 27.1 mg/L. That puts Landshut in the very hard category and well above the neighbouring towns of Erding (273.1 mg/L) and Dachau (190.2 mg/L). We found only one reported figure for the city, so zone differences are not shown.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 20.2 °dH |
|---|---|
| Calcium (mg/L) | 99.8 |
| Magnesium (mg/L) | 27.1 |
| mmol_l | 3.6 |
| Utility | Stadtwerke Landshut |
How Landshut compares
- Tap water in Landshut is 76 % harder than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 62 of 809 in Germany (1 = hardest); 92 % of these cities have softer water.
- In Bayern it is number 15 of 137 cities; the regional median is 15.8 °dH.
- Nearest city with clearly softer water: Erding, 32 km away (15.3 °dH).
- Nearest city with clearly harder water: Ampfing, 38 km away (26 °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 Landshut
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 20 °dH |
| AEG / Electrolux | 5 |
| Beko | 6th |
| Hoover | S3 |
| 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 Landshut water hard or soft?
It is very hard: 361 mg/L as CaCO₃ (21.1 gpg, 20.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Landshut 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 Landshut water?
21.1 gpg, equal to 20.2 °dH, 36.1 °fH or 361 mg/L calcium carbonate.
What dishwasher salt setting should I use in Landshut?
For 361 mg/L (20.2 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Landshut?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Stadtwerke Landshut – Trinkwasser-Prüfbericht (Auszug Februar 2026) (2026). Method: own measurement. Stadtwerke Landshut – Trinkwasser-Prüfbericht (Auszug Februar 2026) · Outdated figure? Tell us