Water hardness in Isernhagen Farster Bauerschaft
12 °dH very hard
Tap water in Isernhagen Farster Bauerschaft is very hard: 12 °dH (214 mg/L · 12.5 gpg · 21.4 °fH).
Source: enercity – Wasserqualität (Untersuchungen 2025) (2025) · data checked 2026-11-02
enercity supplies Isernhagen Farster Bauerschaft, and its 2025 water quality data gives 214.2 mg/L CaCO₃, with calcium at 76 mg/L and magnesium at 5.8 mg/L. That matches the value we show for Hannover. Surrounding places like Laatzen (135.7 mg/L) and Garbsen (258.8 mg/L) differ, so use the figure for your own supply area.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 12 °dH |
|---|---|
| Calcium (mg/L) | 76 |
| Magnesium (mg/L) | 5.8 |
| Utility | enercity |
How Isernhagen Farster Bauerschaft compares
- Tap water in Isernhagen Farster Bauerschaft is close to the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 381 of 809 in Germany (1 = hardest); 52 % of these cities have softer water.
- In Niedersachsen it is number 13 of 94 cities; the regional median is 7 °dH.
- Nearest city with clearly softer water: Laatzen, 18 km away (7.6 °dH).
- Nearest city with clearly harder water: Coppenbrügge, 51 km away (27.9 °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 Isernhagen Farster Bauerschaft
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 12 °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 Isernhagen Farster Bauerschaft water hard or soft?
It is very hard: 214 mg/L as CaCO₃ (12.5 gpg, 12 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Isernhagen Farster Bauerschaft 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 Isernhagen Farster Bauerschaft water?
12.5 gpg, equal to 12 °dH, 21.4 °fH or 214 mg/L calcium carbonate.
What dishwasher salt setting should I use in Isernhagen Farster Bauerschaft?
For 214 mg/L (12 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Isernhagen Farster Bauerschaft?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: enercity – Wasserqualität (Untersuchungen 2025) (2025). Method: figure published by the water supplier. enercity – Wasserqualität (Untersuchungen 2025) · Outdated figure? Tell us