Water hardness in Stralsund
21.3 °dH very hard
Tap water in Stralsund is very hard: 21.3 °dH (380 mg/L · 22.2 gpg · 38 °fH).
Source: REWA Stralsund – Analyse Wasserqualität Wasserwerk Lüssow (2026) · data checked 2026-10-23
Range across supply zones: 323–395 mg/L.
3 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Wasserwerk Andershof I | 21.3 | 380 | very hard |
| Wasserwerk Andershof II | 22.1 | 395 | very hard |
| Wasserwerk Lüssow | 18.1 | 323 | very hard |
REWA Stralsund lists analyses for three waterworks. Lüssow is at 323.1 mg/L CaCO₃, Andershof I at 380.2 mg/L and Andershof II at 394.5 mg/L. The city figure is 380.2 mg/L, with calcium at 135 mg/L in the sample. Greifswald (374.9 mg/L) is similar. Expect heavy limescale, and check which waterworks serves your street.
German law (WRMG) uses 3 bands: soft < 8.4 °dH, medium 8.4–14 °dH, hard > 14 °dH.
Water data
| Total hardness | 21.3 °dH |
|---|---|
| Calcium (mg/L) | 135 |
| Magnesium (mg/L) | 14.1 |
| Utility | REWA Stralsund GmbH |
How Stralsund compares
- Tap water in Stralsund is 85 % harder than the median of the 809 cities we track in Germany (11.5 °dH).
- By hardness it ranks 48 of 809 in Germany (1 = hardest); 94 % of these cities have softer water.
- In Mecklenburg-Vorpommern it is number 1 of 7 cities; the regional median is 17.2 °dH.
- Nearest city with clearly softer water: Malchow, 84 km away (13.5 °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 Stralsund
| Brand | Setting for this water |
|---|---|
| Bosch | H06 |
| Miele | 21 °dH |
| AEG / Electrolux | 5 |
| Beko | 6th |
| Hoover | S3 |
| LG | H4 |
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 Stralsund water hard or soft?
It is very hard: 380 mg/L as CaCO₃ (22.2 gpg, 21.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Stralsund 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 Stralsund water?
22.2 gpg, equal to 21.3 °dH, 38 °fH or 380 mg/L calcium carbonate.
What dishwasher salt setting should I use in Stralsund?
For 380 mg/L (21.3 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Stralsund?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: REWA Stralsund – Analyse Wasserqualität Wasserwerk Lüssow (2026). Method: own measurement. REWA Stralsund – Analyse Wasserqualität Wasserwerk Lüssow · Outdated figure? Tell us