Water hardness in Kočevje
10.4 °dH very hard
Tap water in Kočevje is very hard: 10.4 °dH (186 mg/L · 10.8 gpg · 18.6 °fH).
Source: Hydrovod Kočevje, Trdota vode po vodovodnih sistemih (2025) · data checked 2026-10-29
Slovenian suppliers report total hardness in °dH ("nemške stopinje").
Water data
| Total hardness | 10.4 °dH |
|---|---|
| ca_mg_l | 59 |
| mg_mg_l | 6 |
| Utility | Hydrovod Kočevje |
How Kočevje compares
- Tap water in Kočevje is 5 % softer than the median of the 15 cities we track in Slovenia (11 °dH).
- By hardness it ranks 10 of 15 in Slovenia (1 = hardest); 36 % of these cities have softer water.
- In Jugovzhodna Slovenija it is number 3 of 3 cities; the regional median is 14.7 °dH.
- Nearest city with clearly softer water: Bohinjska Bistrica, 99 km away (6.1 °dH).
- Nearest city with clearly harder water: Straža, 23 km away (15.9 °dH).
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 Kočevje
| Brand | Setting for this water |
|---|---|
| Bosch | H03 |
| 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 Kočevje water hard or soft?
It is very hard: 186 mg/L as CaCO₃ (10.8 gpg, 10.4 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Kočevje safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Slovenian suppliers report total hardness in °dH ("nemške stopinje").
How many grains per gallon is Kočevje water?
10.8 gpg, equal to 10.4 °dH, 18.6 °fH or 186 mg/L calcium carbonate.
What dishwasher salt setting should I use in Kočevje?
For 186 mg/L (10.4 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Kočevje?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Hydrovod Kočevje, Trdota vode po vodovodnih sistemih (2025). Method: figure published by the water supplier. Hydrovod Kočevje, Trdota vode po vodovodnih sistemih · Outdated figure? Tell us