Water hardness in Hollfeld
20.1 °dH very hard
Tap water in Hollfeld is very hard: 20.1 °dH (359 mg/L · 21 gpg · 35.9 °fH).
Source: Wasserzweckverband Juragruppe - Trinkwasseranalyse Ortsnetz Hollfeld (Pruefbericht 140000534481, TrinkwV Anl. 1-3 Teil I) (2024-10) · data checked 2026-11-06
The figure for Hollfeld comes from the drinking-water analysis published by Wasserzweckverband Juragruppe (Pegnitz) for the Ortsnetz Hollfeld, dated October 2024. It reports a total hardness of 358.8 mg/L CaCO₃. This is the value for that local network; the utility's test report PDF shows the full result.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 20.1 °dH |
|---|---|
| Utility | Wasserzweckverband Juragruppe (Pegnitz), Ortsnetz Hollfeld |
How Hollfeld compares
- Tap water in Hollfeld is 75 % harder than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 66 of 809 in Germany (1 = hardest); 92 % of these cities have softer water.
- In Bayern it is number 18 of 137 cities; the regional median is 15.8 °dH.
- Nearest city with clearly softer water: Bayreuth, 20 km away (5.5 °dH).
- Nearest city with clearly harder water: Schlüsselfeld, 52 km away (25.6 °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 Hollfeld
| 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 Hollfeld water hard or soft?
It is very hard: 359 mg/L as CaCO₃ (21 gpg, 20.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Hollfeld 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 Hollfeld water?
21 gpg, equal to 20.1 °dH, 35.9 °fH or 359 mg/L calcium carbonate.
What dishwasher salt setting should I use in Hollfeld?
For 359 mg/L (20.1 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Hollfeld?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Wasserzweckverband Juragruppe - Trinkwasseranalyse Ortsnetz Hollfeld (Pruefbericht 140000534481, TrinkwV Anl. 1-3 Teil I) (2024-10). Method: figure published by the water supplier. Wasserzweckverband Juragruppe - Trinkwasseranalyse Ortsnetz Hollfeld (Pruefbericht 140000534481, TrinkwV Anl. 1-3 Teil I) · Outdated figure? Tell us