Water hardness in Chrzanów
297 mg/L very hard
Tap water in Chrzanów is very hard: 297 mg/L (17.3 gpg · 16.6 °dH · 29.7 °fH).
Source: Wodociągi Chrzanowskie – Mapa wody (2026) · data checked 2026-10-29
Range across supply zones: 110–484 mg/L.
Wodociągi Chrzanowskie publishes a water map from which we computed a median of 297 mg/L CaCO₃. Values range widely, from 110 to 484 mg/L, so hardness differs a lot between areas. Check the map for your own street before you decide on a softener. The median describes the town as very hard but hides large local differences.
Polish suppliers report total hardness in mg/L CaCO₃; the drinking-water regulation range is 60–500 mg/L.
Water data
| Total hardness | 297 mg/L |
|---|---|
| Utility | Wodociągi Chrzanowskie |
How Chrzanów compares
- Tap water in Chrzanów is 21 % harder than the median of the 91 cities we track in Poland (245 mg/L).
- By hardness it ranks 17 of 91 in Poland (1 = hardest); 82 % of these cities have softer water.
- In małopolskie it is number 2 of 5 cities; the regional median is 265 mg/L.
- Nearest city with clearly softer water: Oświęcim, 18 km away (221 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 Chrzanów
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 17 °dH |
| AEG / Electrolux | 4 |
| Beko | 5th |
| 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 Chrzanów water hard or soft?
It is very hard: 297 mg/L as CaCO₃ (17.3 gpg, 16.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Chrzanów 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 Chrzanów water?
17.3 gpg, equal to 16.6 °dH, 29.7 °fH or 297 mg/L calcium carbonate.
What dishwasher salt setting should I use in Chrzanów?
For 297 mg/L (16.6 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Chrzanów?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Wodociągi Chrzanowskie – Mapa wody (2026). Method: computed from supplier's calcium and magnesium. Wodociągi Chrzanowskie – Mapa wody · Outdated figure? Tell us