Water hardness in Roßtal
15.7 °dH very hard
Tap water in Roßtal is very hard: 15.7 °dH (280 mg/L · 16.4 gpg · 28 °fH).
Source: Markt Roßtal, Umfassende Untersuchung Übergabeschacht Stöckach (Prüfbericht infra fürth, Probe 25_02927) (2025-06) · data checked 2026-11-03
Range across supply zones: 277–284 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Wasserwerk Buchschwabach | 15.5 | 277 | very hard |
| Wasserwerk Stöckach | 15.9 | 284 | very hard |
Markt Roßtal publishes lab reports for two waterworks, both sampled on 8 April 2025. Stöckach is 15.9 °dH and Buchschwabach is 15.5 °dH. The Buchschwabach result comes from a single tap at the Feuerwache Raitersaich, not from a works-wide median.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 15.7 °dH |
|---|---|
| Utility | Markt Roßtal (Wasserversorgung) |
How Roßtal compares
- Tap water in Roßtal is 36 % harder than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 238 of 809 in Germany (1 = hardest); 71 % of these cities have softer water.
- In Bayern it is number 71 of 137 cities; the regional median is 15.8 °dH.
- Nearest city with clearly softer water: Nuremberg, 18 km away (12.1 °dH).
- Nearest city with clearly harder water: Langenzenn, 17 km away (19.8 °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 Roßtal
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 16 °dH |
| AEG / Electrolux | 4 |
| Beko | 4th |
| Hoover | S2 |
| 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 Roßtal water hard or soft?
It is very hard: 280 mg/L as CaCO₃ (16.4 gpg, 15.7 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Roßtal 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 Roßtal water?
16.4 gpg, equal to 15.7 °dH, 28 °fH or 280 mg/L calcium carbonate.
What dishwasher salt setting should I use in Roßtal?
For 280 mg/L (15.7 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Roßtal?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Markt Roßtal, Umfassende Untersuchung Übergabeschacht Stöckach (Prüfbericht infra fürth, Probe 25_02927) (2025-06). Method: figure published by the water supplier. Markt Roßtal, Umfassende Untersuchung Übergabeschacht Stöckach (Prüfbericht infra fürth, Probe 25_02927) · Outdated figure? Tell us