Water hardness in Kluczbork
186 mg/L very hard
Tap water in Kluczbork is very hard: 186 mg/L (10.9 gpg · 10.4 °dH · 18.6 °fH).
Source: PSSE Kluczbork, Obszarowa ocena jakości wody za 2023 rok (miasto i gmina Kluczbork) (2023) · data checked 2026-11-07
The 186 mg/L CaCO3 for Kluczbork comes from the 2023 area assessment by the regional sanitary inspectorate (PSSE). Its table prints the highest 2023 value per parameter, not an annual mean, so typical tap hardness is probably lower. Water is supplied by HYDROKOM; the document does not name the raw-water source, so we do not state one. The figure sits inside Poland's 60-500 mg/L CaCO3 limit for total hardness, and the neighbouring Krzywizna waterworks is a separate network with its own, higher figure that is not used here.
Polish suppliers report total hardness in mg/L CaCO₃; the drinking-water regulation range is 60–500 mg/L.
Water data
| Total hardness | 186 mg/L |
|---|---|
| Utility | Wodociągi i Kanalizacja HYDROKOM Sp. z o.o. w Kluczborku |
How Kluczbork compares
- Tap water in Kluczbork is 24 % softer than the median of the 91 cities we track in Poland (245 mg/L).
- By hardness it ranks 74 of 91 in Poland (1 = hardest); 19 % of these cities have softer water.
- In opolskie it is number 2 of 3 cities; the regional median is 186 mg/L.
- Nearest city with clearly softer water: Opole, 39 km away (143 mg/L).
- Nearest city with clearly harder water: Oleśnica, 64 km away (445 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 Kluczbork
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 10 °dH |
| AEG / Electrolux | 2 |
| 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 Kluczbork water hard or soft?
It is very hard: 186 mg/L as CaCO₃ (10.9 gpg, 10.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Kluczbork 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 Kluczbork water?
10.9 gpg, equal to 10.4 °dH, 18.6 °fH or 186 mg/L calcium carbonate.
What dishwasher salt setting should I use in Kluczbork?
For 186 mg/L (10.4 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Kluczbork?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: PSSE Kluczbork, Obszarowa ocena jakości wody za 2023 rok (miasto i gmina Kluczbork) (2023). Method: figure published by the water supplier. PSSE Kluczbork, Obszarowa ocena jakości wody za 2023 rok (miasto i gmina Kluczbork) · Outdated figure? Tell us