Water hardness in Křtětice
1.2 mmol/L hard
Tap water in Křtětice is hard: 1.2 mmol/L (120 mg/L · 7 gpg · 6.7 °dH).
Source: ČEVAK a.s. (Veolia), Moje obec – kvalita pitné vody (2025) · data checked 2026-10-21
Křtětice in Jihočeský kraj is served by ČEVAK a.s. The reported hardness is 120.1 mg/L as CaCO₃, in the hard category, and the value dates from 2025. The page does not describe the source water. Some limescale will show on kettles and taps, and occasional descaling is enough for most homes.
Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
Water data
| Total hardness | 1.2 mmol/L |
|---|---|
| Calcium (mg/L) | 40 |
| Magnesium (mg/L) | 5 |
| Utility | ČEVAK a.s. |
How Křtětice compares
- Tap water in Křtětice is close to the median of the 1516 cities we track in Czechia (1.2 mmol/L).
- By hardness it ranks 603 of 1516 in Czechia (1 = hardest); 47 % of these cities have softer water.
- In Jihočeský kraj it is number 78 of 505 cities; the regional median is 1.2 mmol/L.
- Nearest city with clearly softer water: Horní Chrášťany, 20 km away (0.55 mmol/L).
- Nearest city with clearly harder water: Sedlíkovice, 14 km away (1.99 mmol/L).
Ranking of the hardest and softest water in Czechia →
What it means at home
- Fast scale on taps, shower screens and kettle; white spots on glassware.
- Water heater: efficiency loss and element failures within years if unprotected.
- Dry skin and dull hair after showering are common.
- Softener recommended; jug or reverse osmosis for drinking.
How much salt will you use for softening?
Recommended, especially with a heater or boiler: scale cuts efficiency and shortens its life.
Descale a coffee machine or kettle about every 2 months (typical manufacturer guidance for this hardness).
Estimates for planning, not a quote. Check your appliance manual for exact settings.
Dishwasher setting in Křtětice
| Brand | Setting for this water |
|---|---|
| Bosch | H01 |
| Miele | 7 °dH |
| AEG / Electrolux | 2 |
| Beko | 2nd |
| Hoover | S1 |
| LG | H1 |
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 Křtětice water hard or soft?
It is hard: 120 mg/L as CaCO₃ (7 gpg, 6.7 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Křtětice 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 Křtětice water?
7 gpg, equal to 6.7 °dH, 12 °fH or 120 mg/L calcium carbonate.
What dishwasher salt setting should I use in Křtětice?
For 120 mg/L (6.7 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Křtětice?
Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.
Source
Source: ČEVAK a.s. (Veolia), Moje obec – kvalita pitné vody (2025). Method: figure published by the water supplier. ČEVAK a.s. (Veolia), Moje obec – kvalita pitné vody · Outdated figure? Tell us