Water hardness in Nantiškov
3.31 mmol/L very hard
Tap water in Nantiškov is very hard: 3.31 mmol/L (331 mg/L · 19.4 gpg · 18.6 °dH).
Source: SčVK, Moje obec – kvalita vody (aktuální hodnoty) (2026) · data checked 2026-10-21
SčVK reports 331.3 mg/L CaCO₃ for Nantiškov in Liberec Region, which is very hard water. The utility page gives one value and does not name the source of supply. Scale forms quickly on heating elements, and a softener on the hot-water line is worth considering.
Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
Water data
| Total hardness | 3.31 mmol/L |
|---|---|
| Calcium (mg/L) | 126 |
| Magnesium (mg/L) | 4.13 |
| Utility | Severočeské vodovody a kanalizace, a.s. (SčVK) |
How Nantiškov compares
- Tap water in Nantiškov is 176 % harder than the median of the 1516 cities we track in Czechia (1.2 mmol/L).
- By hardness it ranks 194 of 1516 in Czechia (1 = hardest); 87 % of these cities have softer water.
- In Liberecký kraj it is number 12 of 273 cities; the regional median is 1.26 mmol/L.
- Nearest city with clearly softer water: Hlavice, 1 km away (2 mmol/L).
- Nearest city with clearly harder water: Pavlovice, 29 km away (4.25 mmol/L).
Ranking of the hardest and softest water in Czechia →
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 Nantiškov
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 19 °dH |
| AEG / Electrolux | 4 |
| Beko | 5th |
| Hoover | S3 |
| 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 Nantiškov water hard or soft?
It is very hard: 331 mg/L as CaCO₃ (19.4 gpg, 18.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Nantiškov safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
How many grains per gallon is Nantiškov water?
19.4 gpg, equal to 18.6 °dH, 33.1 °fH or 331 mg/L calcium carbonate.
What dishwasher salt setting should I use in Nantiškov?
For 331 mg/L (18.6 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Nantiškov?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: SčVK, Moje obec – kvalita vody (aktuální hodnoty) (2026). Method: figure published by the water supplier. SčVK, Moje obec – kvalita vody (aktuální hodnoty) · Outdated figure? Tell us