Water hardness in Praga Północ
251 mg/L very hard
Tap water in Praga Północ is very hard: 251 mg/L (14.6 gpg · 14 °dH · 25.1 °fH).
Source: MPWiK m.st. Warszawy S.A. (2026) · data checked 2026-10-29
Range across supply zones: 241–260 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 Praga | 241 | 241 | very hard |
| Zakład Północny | 260 | 260 | very hard |
MPWiK Warsaw reports 250.7 mg/L CaCO₃ for Praga Północ as a median of two zones, with values from 241.3 to 260 mg/L. The two zones are close, so the district's water is consistently very hard. Expect limescale in kettles and washing machines, and descale them regularly.
Polish suppliers report total hardness in mg/L CaCO₃; the drinking-water regulation range is 60–500 mg/L.
Water data
| Total hardness | 251 mg/L |
|---|---|
| Utility | MPWiK m.st. Warszawy S.A. |
How Praga Północ compares
- Tap water in Praga Północ is close to the median of the 91 cities we track in Poland (245 mg/L).
- By hardness it ranks 43 of 91 in Poland (1 = hardest); 52 % of these cities have softer water.
- In mazowieckie it is number 8 of 17 cities; the regional median is 251 mg/L.
- Nearest city with clearly softer water: Wawer, 12 km away (196 mg/L).
- Nearest city with clearly harder water: Ciechanów, 75 km away (338 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 Praga Północ
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 14 °dH |
| AEG / Electrolux | 3 |
| 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 Praga Północ water hard or soft?
It is very hard: 251 mg/L as CaCO₃ (14.6 gpg, 14 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Praga Północ 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 Praga Północ water?
14.6 gpg, equal to 14 °dH, 25.1 °fH or 251 mg/L calcium carbonate.
What dishwasher salt setting should I use in Praga Północ?
For 251 mg/L (14 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Praga Północ?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: MPWiK m.st. Warszawy S.A. (2026). Method: figure published by the water supplier. MPWiK m.st. Warszawy S.A. · Outdated figure? Tell us