Water hardness in Stadtallendorf
6.3 °dH moderately hard
Tap water in Stadtallendorf is moderately hard: 6.3 °dH (113 mg/L · 6.6 gpg · 11.3 °fH).
Source: Stadt Stadtallendorf – Trinkwasseranalysen (Umwelthygiene Marburg) (2021) · data checked 2026-11-03
Range across supply zones: 111–114 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Netz Stadtallendorf (Hoch-/Tiefzone, Zuordnung nicht lesbar) | 6.2 | 111 | moderately hard |
| Wasserwerk Stadtallendorf (Kernstadt, Niederklein) | 6.4 | 114 | moderately hard |
This figure is over 3 years old; hardness may have changed.
Stadt Stadtallendorf publishes drinking water analyses prepared by the Marburg hygiene institute, and the 2021 report gives 114.1 mg/L CaCO₃, a moderate value. Marburg, 17 km away, reports 187.4 mg/L. The analysis is several years old and no zones are listed, so treat the figure as indicative and ask the Stadtwerke for a current one.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 6.3 °dH |
|---|---|
| Utility | Stadtwerke Stadtallendorf |
How Stadtallendorf compares
- Tap water in Stadtallendorf is 45 % softer than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 686 of 809 in Germany (1 = hardest); 15 % of these cities have softer water.
- In Hessen it is number 61 of 73 cities; the regional median is 10.7 °dH.
- Nearest city with clearly softer water: Schotten, 47 km away (4.7 °dH).
- Nearest city with clearly harder water: Schwalmstadt, 13 km away (8.6 °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 Stadtallendorf
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 6 °dH |
| AEG / Electrolux | 2 |
| Beko | 2nd |
| 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 Stadtallendorf water hard or soft?
It is moderately hard: 113 mg/L as CaCO₃ (6.6 gpg, 6.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Stadtallendorf 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 Stadtallendorf water?
6.6 gpg, equal to 6.3 °dH, 11.3 °fH or 113 mg/L calcium carbonate.
What dishwasher salt setting should I use in Stadtallendorf?
For 113 mg/L (6.3 °dH) check your manufacturer's table: level 2–3.
Do I need a water softener in Stadtallendorf?
Not essential; a scale inhibitor protects the heater cheaply.
Source
Source: Stadt Stadtallendorf – Trinkwasseranalysen (Umwelthygiene Marburg) (2021). Method: figure published by the water supplier. Stadt Stadtallendorf – Trinkwasseranalysen (Umwelthygiene Marburg) · Outdated figure? Tell us