Water hardness in Dolní Němčice
1.72 mmol/L hard
Tap water in Dolní Němčice is hard: 1.72 mmol/L (172 mg/L · 10.1 gpg · 9.6 °dH).
Source: ČEVAK a.s. (Veolia), Moje obec – kvalita pitné vody (2026) · data checked 2026-10-21
ČEVAK reports 172.2 mg/L hardness as CaCO₃ for Dolní Němčice in the South Bohemian Region, which is hard. The utility page does not say which source supplies the village. Limescale will build up on kettles and heating elements, so descale them regularly.
Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
Water data
| Total hardness | 1.72 mmol/L |
|---|---|
| Calcium (mg/L) | 44 |
| Magnesium (mg/L) | 15 |
| Utility | ČEVAK a.s. |
How Dolní Němčice compares
- Tap water in Dolní Němčice is 43 % harder than the median of the 1516 cities we track in Czechia (1.2 mmol/L).
- By hardness it ranks 421 of 1516 in Czechia (1 = hardest); 72 % of these cities have softer water.
- In Jihočeský kraj it is number 35 of 505 cities; the regional median is 1.2 mmol/L.
- Nearest city with clearly softer water: Kostelní Vydří, 2 km away (1.34 mmol/L).
- Nearest city with clearly harder water: Lužnice, 47 km away (2.5 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 Dolní Němčice
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 10 °dH |
| AEG / Electrolux | 2 |
| Beko | 3rd |
| Hoover | S1 |
| 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 Dolní Němčice water hard or soft?
It is hard: 172 mg/L as CaCO₃ (10.1 gpg, 9.6 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Dolní Němčice 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 Dolní Němčice water?
10.1 gpg, equal to 9.6 °dH, 17.2 °fH or 172 mg/L calcium carbonate.
What dishwasher salt setting should I use in Dolní Němčice?
For 172 mg/L (9.6 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Dolní Němčice?
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 (2026). Method: figure published by the water supplier. ČEVAK a.s. (Veolia), Moje obec – kvalita pitné vody · Outdated figure? Tell us