Water hardness in Zduńska Wola
195 mg/L very hard
Tap water in Zduńska Wola is very hard: 195 mg/L (11.4 gpg · 10.9 °dH · 19.5 °fH).
Source: MPWiK Zduńska Wola – Woda (2026) · data checked 2026-10-29
Range across supply zones: 175–208 mg/L.
3 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| mg/L | mg/L | ||
|---|---|---|---|
| Karsznice | 208 | 208 | very hard |
| UW 1 | 195 | 195 | very hard |
| UW 2 | 175 | 175 | hard |
MPWiK Zduńska Wola measured a median of 195 mg/L CaCO₃, with three zones between 175 and 208 mg/L. The values are close together, so the whole town sits in the very hard band. Scale will form on heating elements and in appliances. The utility's water page does not state where the supply originates.
Polish suppliers report total hardness in mg/L CaCO₃; the drinking-water regulation range is 60–500 mg/L.
Water data
| Total hardness | 195 mg/L |
|---|---|
| Utility | MPWiK Zduńska Wola |
How Zduńska Wola compares
- Tap water in Zduńska Wola is 20 % softer than the median of the 91 cities we track in Poland (245 mg/L).
- By hardness it ranks 70 of 91 in Poland (1 = hardest); 22 % of these cities have softer water.
- In łódzkie it is number 4 of 5 cities; the regional median is 208 mg/L.
- Nearest city with clearly softer water: Opole, 125 km away (143 mg/L).
- Nearest city with clearly harder water: Bełchatów, 39 km away (263 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 Zduńska Wola
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 11 °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 Zduńska Wola water hard or soft?
It is very hard: 195 mg/L as CaCO₃ (11.4 gpg, 10.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Zduńska Wola 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 Zduńska Wola water?
11.4 gpg, equal to 10.9 °dH, 19.5 °fH or 195 mg/L calcium carbonate.
What dishwasher salt setting should I use in Zduńska Wola?
For 195 mg/L (10.9 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Zduńska Wola?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: MPWiK Zduńska Wola – Woda (2026). Method: own measurement. MPWiK Zduńska Wola – Woda · Outdated figure? Tell us