Water hardness in České Kopisty
4.4 mmol/L very hard
Tap water in České Kopisty is very hard: 4.4 mmol/L (440 mg/L · 25.7 gpg · 24.7 °dH).
Source: SčVK, Moje obec – kvalita vody (aktuální hodnoty) (2026) · data checked 2026-10-21
SčVK reports 440.4 mg/L hardness as CaCO₃ for České Kopisty, which is very hard and well above most Czech villages in this dataset. The utility page does not explain the reason or name the source, so we do not guess. Scale will form quickly on heaters and taps, so a softener or descaling routine is worth considering.
Czech suppliers report "Vápník a hořčík" in mmol/L; the recommended range is 2–3.5 mmol/L.
Water data
| Total hardness | 4.4 mmol/L |
|---|---|
| Calcium (mg/L) | 152 |
| Magnesium (mg/L) | 14.8 |
| Utility | Severočeské vodovody a kanalizace, a.s. (SčVK) |
How České Kopisty compares
- Tap water in České Kopisty is 267 % harder than the median of the 1516 cities we track in Czechia (1.2 mmol/L).
- By hardness it ranks 107 of 1516 in Czechia (1 = hardest); 93 % of these cities have softer water.
- In Ústecký kraj it is number 107 of 631 cities; the regional median is 1.31 mmol/L.
- Nearest city with clearly softer water: Litoměřice, 3 km away (3.4 mmol/L).
- Nearest city with clearly harder water: Siřejovice, 9 km away (6.13 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 České Kopisty
| Brand | Setting for this water |
|---|---|
| Bosch | H06 |
| Miele | 25 °dH |
| AEG / Electrolux | 6 |
| Beko | 6th |
| Hoover | S3 |
| LG | H4 |
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 České Kopisty water hard or soft?
It is very hard: 440 mg/L as CaCO₃ (25.7 gpg, 24.7 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in České Kopisty 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 České Kopisty water?
25.7 gpg, equal to 24.7 °dH, 44 °fH or 440 mg/L calcium carbonate.
What dishwasher salt setting should I use in České Kopisty?
For 440 mg/L (24.7 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in České Kopisty?
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