Water hardness in Mielec
210 mg/L very hard
Tap water in Mielec is very hard: 210 mg/L (12.3 gpg · 11.8 °dH · 21 °fH).
Source: GZGK Mielec – Informacja o twardości wody dostarczanej (17.08.2026) (2026) · data checked 2026-10-29
A notice from the Mielec municipal services office (GZGK), dated 17 August 2026, gives the water delivered in Mielec a hardness of 210 mg/L CaCO₃. The notice cites a single figure and no range, so we cannot show how it varies across the network. The value is in the very hard band, and scale on heating elements is the usual result.
Polish suppliers report total hardness in mg/L CaCO₃; the drinking-water regulation range is 60–500 mg/L.
Water data
| Total hardness | 210 mg/L |
|---|---|
| Utility | MPGK Mielec (via GZGK Gmina Mielec notice) |
How Mielec compares
- Tap water in Mielec is 14 % softer than the median of the 91 cities we track in Poland (245 mg/L).
- By hardness it ranks 63 of 91 in Poland (1 = hardest); 31 % of these cities have softer water.
- In podkarpackie it is number 2 of 8 cities; the regional median is 186 mg/L.
- Nearest city with clearly softer water: Stalowa Wola, 55 km away (130 mg/L).
- Nearest city with clearly harder water: Rzeszów, 49 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 Mielec
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 12 °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 Mielec water hard or soft?
It is very hard: 210 mg/L as CaCO₃ (12.3 gpg, 11.8 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Mielec 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 Mielec water?
12.3 gpg, equal to 11.8 °dH, 21 °fH or 210 mg/L calcium carbonate.
What dishwasher salt setting should I use in Mielec?
For 210 mg/L (11.8 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Mielec?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: GZGK Mielec – Informacja o twardości wody dostarczanej (17.08.2026) (2026). Method: figure published by the water supplier. GZGK Mielec – Informacja o twardości wody dostarczanej (17.08.2026) · Outdated figure? Tell us