Water hardness in Świnoujście
226 mg/L very hard
Tap water in Świnoujście is very hard: 226 mg/L (13.2 gpg · 12.7 °dH · 22.6 °fH).
Source: ZWiK Świnoujście – Średnia twardość wody 2021 (2021) · data checked 2026-10-29
Range across supply zones: 159–293 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| mg/L | mg/L | ||
|---|---|---|---|
| lewobrzeże (centrum) | 293 | 293 | very hard |
| prawobrzeże (Warszów) | 159 | 159 | hard |
This figure is over 3 years old; hardness may have changed.
ZWiK Świnoujście published an average hardness of 226 mg/L CaCO₃ for 2021, with two zones from 159 to 293 mg/L. The figures are from 2021, so they may have changed. The spread is wide, which means hardness depends on the part of town. Overall the water is in the very hard band.
Polish suppliers report total hardness in mg/L CaCO₃; the drinking-water regulation range is 60–500 mg/L.
Water data
| Total hardness | 226 mg/L |
|---|---|
| Utility | ZWiK Świnoujście |
How Świnoujście compares
- Tap water in Świnoujście is 8 % softer than the median of the 91 cities we track in Poland (245 mg/L).
- By hardness it ranks 57 of 91 in Poland (1 = hardest); 38 % of these cities have softer water.
- In zachodniopomorskie it is number 4 of 5 cities; the regional median is 248 mg/L.
- Nearest city with clearly harder water: Stargard, 83 km away (425 mg/L).
Ranking of the hardest and softest water in Poland →
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 Świnoujście
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 13 °dH |
| AEG / Electrolux | 3 |
| Beko | 3rd |
| Hoover | S2 |
| LG | H2 |
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 Świnoujście water hard or soft?
It is very hard: 226 mg/L as CaCO₃ (13.2 gpg, 12.7 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Świnoujście safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Polish suppliers report total hardness in mg/L CaCO₃; the drinking-water regulation range is 60–500 mg/L.
How many grains per gallon is Świnoujście water?
13.2 gpg, equal to 12.7 °dH, 22.6 °fH or 226 mg/L calcium carbonate.
What dishwasher salt setting should I use in Świnoujście?
For 226 mg/L (12.7 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Świnoujście?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: ZWiK Świnoujście – Średnia twardość wody 2021 (2021). Method: figure published by the water supplier. ZWiK Świnoujście – Średnia twardość wody 2021 · Outdated figure? Tell us