Water hardness in Mińsk Mazowiecki
274 mg/L very hard
Tap water in Mińsk Mazowiecki is very hard: 274 mg/L (16 gpg · 15.3 °dH · 27.4 °fH).
Source: PWiK Mińsk Mazowiecki – Twardość wody w Mińsku Mazowieckim (2026-03-13) (2026) · data checked 2026-10-29
Range across supply zones: 200–347 mg/L.
2 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| mg/L | mg/L | ||
|---|---|---|---|
| SUW Kędzierak | 200 | 200 | very hard |
| SUW Mirecki | 347 | 347 | very hard |
PWiK Mińsk Mazowiecki reported in March 2026 that hardness differs between its two zones, from 200 to 347 mg/L CaCO₃, with a median of 273.5 mg/L. Even the softer zone is very hard. Your result depends on which waterworks feeds your street, so ask the utility if the difference matters for a softener.
Polish suppliers report total hardness in mg/L CaCO₃; the drinking-water regulation range is 60–500 mg/L.
Water data
| Total hardness | 274 mg/L |
|---|---|
| Utility | PWiK Mińsk Mazowiecki |
How Mińsk Mazowiecki compares
- Tap water in Mińsk Mazowiecki is 12 % harder than the median of the 91 cities we track in Poland (245 mg/L).
- By hardness it ranks 25 of 91 in Poland (1 = hardest); 73 % of these cities have softer water.
- In mazowieckie it is number 2 of 17 cities; the regional median is 251 mg/L.
- Nearest city with clearly softer water: Otwock, 23 km away (212 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 Mińsk Mazowiecki
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 15 °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 Mińsk Mazowiecki water hard or soft?
It is very hard: 274 mg/L as CaCO₃ (16 gpg, 15.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Mińsk Mazowiecki 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 Mińsk Mazowiecki water?
16 gpg, equal to 15.3 °dH, 27.4 °fH or 274 mg/L calcium carbonate.
What dishwasher salt setting should I use in Mińsk Mazowiecki?
For 274 mg/L (15.3 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Mińsk Mazowiecki?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: PWiK Mińsk Mazowiecki – Twardość wody w Mińsku Mazowieckim (2026-03-13) (2026). Method: figure published by the water supplier. PWiK Mińsk Mazowiecki – Twardość wody w Mińsku Mazowieckim (2026-03-13) · Outdated figure? Tell us