Water hardness in Dřevčice
1.93 mmol/L very hard
Tap water in Dřevčice is very hard: 1.93 mmol/L (193 mg/L · 11.3 gpg · 10.8 °dH).
Source: SčVK, Moje obec – kvalita vody (aktuální hodnoty) (2026) · data checked 2026-10-21
Range across supply zones: 193–206 mg/L.
Dřevčice, in the Česká Lípa district, has very hard water. SčVK reports 193.2 mg/L as CaCO₃ with readings from 193.2 to 206.2 mg/L, so the published figure sits at the bottom of its own range. The source page is the same SčVK entry used for neighbouring Dražejov, so confirm the match for your address. Scale will form steadily on heating elements.
Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
Water data
| Total hardness | 1.93 mmol/L |
|---|---|
| Calcium (mg/L) | 71 |
| Magnesium (mg/L) | 4.03 |
| Utility | Severočeské vodovody a kanalizace, a.s. (SčVK) |
How Dřevčice compares
- Tap water in Dřevčice is 61 % harder than the median of the 1516 cities we track in Czechia (1.2 mmol/L).
- By hardness it ranks 378 of 1516 in Czechia (1 = hardest); 75 % of these cities have softer water.
- In Liberecký kraj it is number 85 of 273 cities; the regional median is 1.26 mmol/L.
- Nearest city with clearly softer water: Holany, 5 km away (1.47 mmol/L).
- Nearest city with clearly harder water: Lhota, 1 km away (2.84 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 Dřevčice
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| Miele | 11 °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 Dřevčice water hard or soft?
It is very hard: 193 mg/L as CaCO₃ (11.3 gpg, 10.8 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Dřevčice 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 Dřevčice water?
11.3 gpg, equal to 10.8 °dH, 19.3 °fH or 193 mg/L calcium carbonate.
What dishwasher salt setting should I use in Dřevčice?
For 193 mg/L (10.8 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Dřevčice?
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