Water hardness in Drahůnky
0.51 mmol/L soft
Tap water in Drahůnky is soft: 0.51 mmol/L (52 mg/L · 3 gpg · 2.9 °dH).
Source: SčVK, Moje obec – kvalita vody (aktuální hodnoty) (2026) · data checked 2026-10-21
Range across supply zones: 49–54 mg/L.
Drahůnky in Ústecký kraj is supplied by SčVK, which reports 51.5 mg/L as CaCO₃, with a range of 49.0 to 54.0 mg/L. This is soft water, and it is steady across the sampling points. The source page does not describe the origin of the water, so the geology is not covered here. Little scale forms, and detergent can be dosed at the lower end.
Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
Water data
| Total hardness | 0.51 mmol/L |
|---|---|
| Calcium (mg/L) | 14 |
| Magnesium (mg/L) | 3.56 |
| Utility | Severočeské vodovody a kanalizace, a.s. (SčVK) |
How Drahůnky compares
- Tap water in Drahůnky is 57 % softer than the median of the 1516 cities we track in Czechia (1.2 mmol/L).
- By hardness it ranks 1390 of 1516 in Czechia (1 = hardest); 8 % of these cities have softer water.
- In Ústecký kraj it is number 577 of 631 cities; the regional median is 1.31 mmol/L.
- Nearest city with clearly softer water: Dubí, 2 km away (0.35 mmol/L).
- Nearest city with clearly harder water: Přítkov, 1 km away (0.69 mmol/L).
Ranking of the hardest and softest water in Czechia →
What it means at home
- Little or no limescale in kettles, water heaters or washing machines.
- Soap lathers easily; water does not dry skin or hair.
- Dishwasher: salt setting at minimum or off.
- No softener needed; a jug filter only changes taste.
How much salt will you use for softening?
No. Water this soft does not need softening.
Descale a coffee machine or kettle about every 6 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Drahůnky
| Brand | Setting for this water |
|---|---|
| Bosch | H00 |
| Miele | 3 °dH |
| AEG / Electrolux | 1 |
| Beko | 1st |
| Hoover | S0 |
| LG | H0 |
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 Drahůnky water hard or soft?
It is soft: 52 mg/L as CaCO₃ (3 gpg, 2.9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Drahůnky 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 Drahůnky water?
3 gpg, equal to 2.9 °dH, 5.2 °fH or 52 mg/L calcium carbonate.
What dishwasher salt setting should I use in Drahůnky?
For 52 mg/L (2.9 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in Drahůnky?
No. With soft water a softener adds nothing.
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