Water hardness in Thalmässing
16.9 °dH very hard
Tap water in Thalmässing is very hard: 16.9 °dH (302 mg/L · 17.6 gpg · 30.2 °fH).
Source: Gemeinde Thalmässing - Wasserkarte Trinkwasserwerte (Gesamthärte) (2025-12) · data checked 2026-11-06
Range across supply zones: 287–316 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Alfershausen | 17.7 | 316 | very hard |
| Thalmässing | 16.1 | 287 | very hard |
The municipality of Thalmässing in the Roth district publishes two values in its water map (December 2025), one for the Ortsteil Thalmässing and one for Alfershausen. They range from 287.4 to 315.9 mg/L CaCO₃, with a median of 301.7 mg/L. Both fall in the very hard category. This page does not state which value belongs to which Ortsteil.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 16.9 °dH |
|---|---|
| Utility | Gemeinde Thalmässing (Wasserkarte) |
How Thalmässing compares
- Tap water in Thalmässing is 47 % harder than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 191 of 809 in Germany (1 = hardest); 76 % of these cities have softer water.
- Nearest city with clearly softer water: Schwarzenbruck, 28 km away (6.6 °dH).
- Nearest city with clearly harder water: Höchstädt an der Donau, 72 km away (21.8 °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 Thalmässing
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 17 °dH |
| AEG / Electrolux | 4 |
| Beko | 5th |
| Hoover | S3 |
| 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 Thalmässing water hard or soft?
It is very hard: 302 mg/L as CaCO₃ (17.6 gpg, 16.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Thalmässing 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 Thalmässing water?
17.6 gpg, equal to 16.9 °dH, 30.2 °fH or 302 mg/L calcium carbonate.
What dishwasher salt setting should I use in Thalmässing?
For 302 mg/L (16.9 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Thalmässing?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Gemeinde Thalmässing - Wasserkarte Trinkwasserwerte (Gesamthärte) (2025-12). Method: figure published by the water supplier. Gemeinde Thalmässing - Wasserkarte Trinkwasserwerte (Gesamthärte) · Outdated figure? Tell us