Water hardness in Proboštov
1.81 mmol/L very hard
Tap water in Proboštov is very hard: 1.81 mmol/L (181 mg/L · 10.6 gpg · 10.2 °dH).
Source: SčVK, Moje obec – kvalita vody (aktuální hodnoty) (2026) · data checked 2026-10-21
Range across supply zones: 176–188 mg/L.
SčVK reports a median of 181.2 mg/L as CaCO₃ for Proboštov in the Ústí nad Labem district, with a range of 176.2 to 188.2 mg/L. That is very hard water and the range is narrow. The utility page does not state the source for this village. Expect heavy scale on kettles, heaters and shower fittings, and consider a softener for a boiler.
Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
Water data
| Total hardness | 1.81 mmol/L |
|---|---|
| Calcium (mg/L) | 46 |
| Magnesium (mg/L) | 15.2 |
| Utility | Severočeské vodovody a kanalizace, a.s. (SčVK) |
How Proboštov compares
- Tap water in Proboštov is 51 % harder than the median of the 1516 cities we track in Czechia (1.2 mmol/L).
- By hardness it ranks 403 of 1516 in Czechia (1 = hardest); 73 % of these cities have softer water.
- In Ústecký kraj it is number 250 of 631 cities; the regional median is 1.31 mmol/L.
- Nearest city with clearly softer water: Řetouň, 2 km away (0.88 mmol/L).
- Nearest city with clearly harder water: Lhota pod Pannou, 2 km away (3.73 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 Proboštov
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 10 °dH |
| AEG / Electrolux | 2 |
| 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 Proboštov water hard or soft?
It is very hard: 181 mg/L as CaCO₃ (10.6 gpg, 10.2 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Proboštov 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 Proboštov water?
10.6 gpg, equal to 10.2 °dH, 18.1 °fH or 181 mg/L calcium carbonate.
What dishwasher salt setting should I use in Proboštov?
For 181 mg/L (10.2 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Proboštov?
Yes, unless you are only passing through: scale damages appliances within a few years.
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