Water hardness in Horní Chrášťany
0.55 mmol/L soft
Tap water in Horní Chrášťany is soft: 0.55 mmol/L (55 mg/L · 3.2 gpg · 3.1 °dH).
Source: ČEVAK a.s. (Veolia), Moje obec – kvalita pitné vody (2026) · data checked 2026-10-21
Horní Chrášťany in Jihočeský kraj is supplied by ČEVAK, which reports 55.0 mg/L. That is soft water, and notably softer than Dolní Chrášťany in the same region. This shows how much hardness can change between neighbouring villages with different supplies. Scale should be light, and a softener is not needed.
Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
Water data
| Total hardness | 0.55 mmol/L |
|---|---|
| Calcium (mg/L) | 15 |
| Magnesium (mg/L) | 4.3 |
| Utility | ČEVAK a.s. |
How Horní Chrášťany compares
- Tap water in Horní Chrášťany is 54 % softer than the median of the 1516 cities we track in Czechia (1.2 mmol/L).
- By hardness it ranks 1374 of 1516 in Czechia (1 = hardest); 9 % of these cities have softer water.
- In Jihočeský kraj it is number 465 of 505 cities; the regional median is 1.2 mmol/L.
- Nearest city with clearly softer water: Chvalšiny, 16 km away (0.43 mmol/L).
- Nearest city with clearly harder water: Dolní Chrášťany, 1 km away (2.33 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 Horní Chrášťany
| 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 Horní Chrášťany water hard or soft?
It is soft: 55 mg/L as CaCO₃ (3.2 gpg, 3.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Horní Chrášťany 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 Horní Chrášťany water?
3.2 gpg, equal to 3.1 °dH, 5.5 °fH or 55 mg/L calcium carbonate.
What dishwasher salt setting should I use in Horní Chrášťany?
For 55 mg/L (3.1 °dH) check your manufacturer's table: level 0–1, usually no salt.
Do I need a water softener in Horní Chrášťany?
No. With soft water a softener adds nothing.
Source
Source: ČEVAK a.s. (Veolia), Moje obec – kvalita pitné vody (2026). Method: figure published by the water supplier. ČEVAK a.s. (Veolia), Moje obec – kvalita pitné vody · Outdated figure? Tell us