Water hardness in Doubravice
2.13 mmol/L very hard
Tap water in Doubravice is very hard: 2.13 mmol/L (213 mg/L · 12.5 gpg · 11.9 °dH).
Source: SčVK, Moje obec – kvalita vody (aktuální hodnoty) (2026) · data checked 2026-10-21
SčVK reports 213.2 mg/L as CaCO₃ for Doubravice in the Ústí nad Labem district, which is very hard. The utility page does not say which source feeds the village. Scale forms quickly on kettles, heating elements and glass, so a softener or scale protection for the boiler 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 | 2.13 mmol/L |
|---|---|
| Calcium (mg/L) | 44 |
| Magnesium (mg/L) | 25 |
| Utility | Severočeské vodovody a kanalizace, a.s. (SčVK) |
How Doubravice compares
- Tap water in Doubravice is 78 % harder than the median of the 1516 cities we track in Czechia (1.2 mmol/L).
- By hardness it ranks 344 of 1516 in Czechia (1 = hardest); 77 % of these cities have softer water.
- In Ústecký kraj it is number 238 of 631 cities; the regional median is 1.31 mmol/L.
- Nearest city with clearly softer water: Knínice, 3 km away (0.95 mmol/L).
- Nearest city with clearly harder water: Homole u Panny, 2 km away (2.75 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 Doubravice
| 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 Doubravice water hard or soft?
It is very hard: 213 mg/L as CaCO₃ (12.5 gpg, 11.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Doubravice 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 Doubravice water?
12.5 gpg, equal to 11.9 °dH, 21.3 °fH or 213 mg/L calcium carbonate.
What dishwasher salt setting should I use in Doubravice?
For 213 mg/L (11.9 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Doubravice?
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