Water hardness in Stalowa Wola
130 mg/L hard
Tap water in Stalowa Wola is hard: 130 mg/L (7.6 gpg · 7.3 °dH · 13 °fH).
Source: MZK Stalowa Wola – Parametry wody (2026) · data checked 2026-10-29
MZK Stalowa Wola's water works page gives 130 mg/L CaCO₃ for 2026, in the hard category. This is among the softer values in our Polish data. It is a single figure for the city. Limescale will form on heating elements over time, but ordinary descaling is usually enough.
Polish suppliers report total hardness in mg/L CaCO₃; the drinking-water regulation range is 60–500 mg/L.
Water data
| Total hardness | 130 mg/L |
|---|---|
| Utility | MZK Stalowa Wola (ZWiK) |
How Stalowa Wola compares
- Tap water in Stalowa Wola is 47 % softer than the median of the 91 cities we track in Poland (245 mg/L).
- By hardness it ranks 84 of 91 in Poland (1 = hardest); 8 % of these cities have softer water.
- In podkarpackie it is number 8 of 8 cities; the regional median is 186 mg/L.
- Nearest city with clearly harder water: Kraśnik, 40 km away (266 mg/L).
Ranking of the hardest and softest water in Poland →
What it means at home
- Fast scale on taps, shower screens and kettle; white spots on glassware.
- Water heater: efficiency loss and element failures within years if unprotected.
- Dry skin and dull hair after showering are common.
- Softener recommended; jug or reverse osmosis for drinking.
How much salt will you use for softening?
Recommended, especially with a heater or boiler: scale cuts efficiency and shortens its life.
Descale a coffee machine or kettle about every 2 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Stalowa Wola
| Brand | Setting for this water |
|---|---|
| Bosch | H01 |
| Miele | 7 °dH |
| AEG / Electrolux | 2 |
| Beko | 2nd |
| Hoover | S1 |
| 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 Stalowa Wola water hard or soft?
It is hard: 130 mg/L as CaCO₃ (7.6 gpg, 7.3 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Stalowa 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 Stalowa Wola water?
7.6 gpg, equal to 7.3 °dH, 13 °fH or 130 mg/L calcium carbonate.
What dishwasher salt setting should I use in Stalowa Wola?
For 130 mg/L (7.3 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Stalowa Wola?
Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.
Source
Source: MZK Stalowa Wola – Parametry wody (2026). Method: figure published by the water supplier. MZK Stalowa Wola – Parametry wody · Outdated figure? Tell us