Water hardness in Sonnefeld
4.4 °dH moderately hard
Tap water in Sonnefeld is moderately hard: 4.4 °dH (79 mg/L · 4.6 gpg · 7.8 °fH).
Source: Gemeindewerke Sonnefeld - Information der Abnehmer über die Trinkwasserqualität gem. §21 TrinkwV (Stand September 2021) (2021-09) · data checked 2026-11-06
This figure is over 3 years old; hardness may have changed.
For Sonnefeld the figure is 78.5 mg/L CaCO₃, published by the Gemeindewerke Sonnefeld as of September 2021. It is more than three years old and should be treated as outdated. Ask the utility for the current value before relying on it.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 4.4 °dH |
|---|---|
| Utility | Gemeindewerke Sonnefeld |
How Sonnefeld compares
- Tap water in Sonnefeld is 62 % softer than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 750 of 809 in Germany (1 = hardest); 7 % of these cities have softer water.
- Nearest city with clearly softer water: Neuensalz, 83 km away (2.9 °dH).
- Nearest city with clearly harder water: Lichtenfels, 9 km away (9.4 °dH).
Ranking of the hardest and softest water in Germany →
What it means at home
- Visible kettle scale every few weeks; vinegar or citric acid is enough.
- Water heater and washing machine: some long-term scale; a scale inhibitor slows it.
- Dishwasher: medium salt setting.
- Softener optional; pays off mainly with a gas boiler or tankless heater.
How much salt will you use for softening?
Optional. A scale inhibitor or a small softener protects the heater; soap savings are modest.
Descale a coffee machine or kettle about every 3 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Sonnefeld
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 4 °dH |
| AEG / Electrolux | 2 |
| Beko | 1st |
| Hoover | S1 |
| LG | H1 |
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 Sonnefeld water hard or soft?
It is moderately hard: 79 mg/L as CaCO₃ (4.6 gpg, 4.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Sonnefeld 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 Sonnefeld water?
4.6 gpg, equal to 4.4 °dH, 7.8 °fH or 79 mg/L calcium carbonate.
What dishwasher salt setting should I use in Sonnefeld?
For 79 mg/L (4.4 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Sonnefeld?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Gemeindewerke Sonnefeld - Information der Abnehmer über die Trinkwasserqualität gem. §21 TrinkwV (Stand September 2021) (2021-09). Method: older figure, source currently unavailable. Gemeindewerke Sonnefeld - Information der Abnehmer über die Trinkwasserqualität gem. §21 TrinkwV (Stand September 2021) · Outdated figure? Tell us