Water hardness in Geltendorf
17.1 °dH very hard
Tap water in Geltendorf is very hard: 17.1 °dH (305 mg/L · 17.8 gpg · 30.5 °fH).
Source: Gemeinde Geltendorf WV Geltendorf-Walleshausen Prüfbericht 17.09.2025 (AGROLAB Analysennr. 755334) (2025-09) · data checked 2026-11-06
For Geltendorf there is a test report dated 17 September 2025 (AGROLAB) from the Geltendorf-Walleshausen water supply, showing 305.2 mg/L CaCO₃ (very hard). It is a single sample. The source does not say whether it applies to every part of the municipality, so check with the Gemeinde.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 17.1 °dH |
|---|---|
| Utility | Gemeinde Geltendorf, Wasserversorgung Geltendorf (WV Geltendorf-Walleshausen) |
How Geltendorf compares
- Tap water in Geltendorf is 49 % harder than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 185 of 809 in Germany (1 = hardest); 77 % of these cities have softer water.
- In Bayern it is number 59 of 137 cities; the regional median is 15.8 °dH.
- Nearest city with clearly softer water: Eichenau, 14 km away (12.8 °dH).
- Nearest city with clearly harder water: Höchstädt an der Donau, 64 km away (21.8 °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 Geltendorf
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 17 °dH |
| AEG / Electrolux | 4 |
| Beko | 5th |
| 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 Geltendorf water hard or soft?
It is very hard: 305 mg/L as CaCO₃ (17.8 gpg, 17.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Geltendorf 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 Geltendorf water?
17.8 gpg, equal to 17.1 °dH, 30.5 °fH or 305 mg/L calcium carbonate.
What dishwasher salt setting should I use in Geltendorf?
For 305 mg/L (17.1 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Geltendorf?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Gemeinde Geltendorf WV Geltendorf-Walleshausen Prüfbericht 17.09.2025 (AGROLAB Analysennr. 755334) (2025-09). Method: figure published by the water supplier. Gemeinde Geltendorf WV Geltendorf-Walleshausen Prüfbericht 17.09.2025 (AGROLAB Analysennr. 755334) · Outdated figure? Tell us