Water hardness in Günzburg
17.7 °dH very hard
Tap water in Günzburg is very hard: 17.7 °dH (316 mg/L · 18.5 gpg · 31.6 °fH).
Source: Stadtwerke Günzburg, Trinkwasseranalyse März 2025 (2025-03) · data checked 2026-11-03
Range across supply zones: 237–436 mg/L.
3 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Versorgungsgebiet Günzburg (Stadt) | 17.7 | 316 | very hard |
| Versorgungsgebiet Reisensburg | 24.4 | 436 | very hard |
| Versorgungsgebiet Riedhausen | 13.3 | 237 | very hard |
Stadtwerke Günzburg lists three zones in its March 2025 analysis: Günzburg at 315.9 mg/L CaCO₃, Reisensburg at 436.4 mg/L and Riedhausen at 237.4 mg/L. The median is 315.9 mg/L, in the very hard category, and the Riedhausen figure is a 2023 annual mean. Check which zone your address is in, since the gap between Reisensburg and Riedhausen is almost 200 mg/L.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 17.7 °dH |
|---|---|
| Utility | Stadtwerke Günzburg |
How Günzburg compares
- Tap water in Günzburg is 54 % harder than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 159 of 809 in Germany (1 = hardest); 80 % of these cities have softer water.
- In Bayern it is number 51 of 137 cities; the regional median is 15.8 °dH.
- Nearest city with clearly softer water: Ulm, 23 km away (13.4 °dH).
- Nearest city with clearly harder water: Beilstein, 96 km away (23 °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 Günzburg
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 18 °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 Günzburg water hard or soft?
It is very hard: 316 mg/L as CaCO₃ (18.5 gpg, 17.7 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Günzburg 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 Günzburg water?
18.5 gpg, equal to 17.7 °dH, 31.6 °fH or 316 mg/L calcium carbonate.
What dishwasher salt setting should I use in Günzburg?
For 316 mg/L (17.7 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Günzburg?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Stadtwerke Günzburg, Trinkwasseranalyse März 2025 (2025-03). Method: figure published by the water supplier. Stadtwerke Günzburg, Trinkwasseranalyse März 2025 · Outdated figure? Tell us