Water hardness in Ohrazeníčko
2.17 mmol/L very hard
Tap water in Ohrazeníčko is very hard: 2.17 mmol/L (217 mg/L · 12.7 gpg · 12.2 °dH).
Source: ČEVAK a.s. (Veolia), Moje obec – kvalita pitné vody (2026) · data checked 2026-10-21
ČEVAK reports 217.2 mg/L as CaCO₃ for Ohrazeníčko in the Jihočeský kraj, which is very hard. Neighbouring ČEVAK localities show much lower values, so hardness differs between supply systems in this part of the region. We have not confirmed the source. Scale on heaters and taps will be noticeable.
Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
Water data
| Total hardness | 2.17 mmol/L |
|---|---|
| Calcium (mg/L) | 64 |
| Magnesium (mg/L) | 14 |
| Utility | ČEVAK a.s. |
How Ohrazeníčko compares
- Tap water in Ohrazeníčko is 81 % harder than the median of the 1516 cities we track in Czechia (1.2 mmol/L).
- By hardness it ranks 326 of 1516 in Czechia (1 = hardest); 78 % of these cities have softer water.
- In Jihočeský kraj it is number 11 of 505 cities; the regional median is 1.2 mmol/L.
- Nearest city with clearly softer water: Ledenice, 2 km away (1.1 mmol/L).
- Nearest city with clearly harder water: Muckov, 39 km away (3.01 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 Ohrazeníčko
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| 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 Ohrazeníčko water hard or soft?
It is very hard: 217 mg/L as CaCO₃ (12.7 gpg, 12.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Ohrazeníčko 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 Ohrazeníčko water?
12.7 gpg, equal to 12.2 °dH, 21.7 °fH or 217 mg/L calcium carbonate.
What dishwasher salt setting should I use in Ohrazeníčko?
For 217 mg/L (12.2 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Ohrazeníčko?
Yes, unless you are only passing through: scale damages appliances within a few years.
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