Water hardness in Finsterwalde
11.4 °dH very hard
Tap water in Finsterwalde is very hard: 11.4 °dH (204 mg/L · 11.9 gpg · 20.4 °fH).
Source: Stadtwerke Finsterwalde, Trinkwasserbeschaffenheit im Versorgungsgebiet (2025-11) · data checked 2026-11-03
Stadtwerke Finsterwalde's analysis of November 2025 gives 11.4 °dH, classed as medium, for the Finsterwalde waterworks, which supplies the town. The same sheet lists a second works with considerably harder water; it was not assigned to the town here, because the column mapping rests on the sheet's header order. The utility's website quotes a similar range for the town (11 to 13 °dH). Kettles and showerheads will scale, but only moderately.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 11.4 °dH |
|---|---|
| Utility | Stadtwerke Finsterwalde GmbH |
How Finsterwalde compares
- Tap water in Finsterwalde is close to the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 407 of 809 in Germany (1 = hardest); 49 % of these cities have softer water.
- In Brandenburg it is number 14 of 15 cities; the regional median is 16 °dH.
- Nearest city with clearly softer water: Pulsnitz, 47 km away (7.2 °dH).
- Nearest city with clearly harder water: Lübbenau/Spreewald, 32 km away (25 °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 Finsterwalde
| 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 Finsterwalde water hard or soft?
It is very hard: 204 mg/L as CaCO₃ (11.9 gpg, 11.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Finsterwalde 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 Finsterwalde water?
11.9 gpg, equal to 11.4 °dH, 20.4 °fH or 204 mg/L calcium carbonate.
What dishwasher salt setting should I use in Finsterwalde?
For 204 mg/L (11.4 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Finsterwalde?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Stadtwerke Finsterwalde, Trinkwasserbeschaffenheit im Versorgungsgebiet (2025-11). Method: figure published by the water supplier. Stadtwerke Finsterwalde, Trinkwasserbeschaffenheit im Versorgungsgebiet · Outdated figure? Tell us