Water hardness in Velenje
9 °dH hard
Tap water in Velenje is hard: 9 °dH (160 mg/L · 9.3 gpg · 16 °fH).
Source: KP Velenje - Trdote pitne vode v Šaleški dolini (Informacije o trdoti vode in vsebnosti mineralnih snovi 2026), analyses NLZOH Celje (2026-01) · data checked 2026-10-22
Range across supply zones: 32–293 mg/L.
6 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| OO1 R1 Velenje (Konovo, Smartno, Salek, Paka pri Velenju, Bevce, Gorica, Stara vas, Staro Velenje, Crnova, Prelska, Vinska Gora, Paski Kozjak) | 16.4 | 293 | very hard |
| OO2 Bele Vode (Bele Vode, Visocki Vrh) | 12.2 | 218 | very hard |
| OO3 Sentvid/Sleme (Sentvid) | 1.8 | 32 | soft |
| OO4 Grmov vrh (Šoštanj, Skorno-Florjan, Lokovica, Pesje, Stara vas, Staro Velenje, Velenje left and right bank, Gora Oljka, Paska vas, Podgora, Recica ob Paki) | 7.4 | 132 | hard |
| OO5 Mazej/Topolsica (Topolsica, Ravne, Plesivec, Gaberke, Skale, Hrastovec, Cirkovce, Konovo) | 10.5 | 187 | very hard |
| OO6 Lom | 6.1 | 109 | moderately hard |
KP Velenje reports total hardness for six supply areas, from the January 2026 report with analyses by NLZOH Celje. The spread is wide: Sentvid is very soft at 1.8 °dH, Lom is 6.1, Grmov vrh 7.4, Mazej/Topolsica 10.5, Bele Vode 12.2 and the central Velenje area 16.4 °dH. The city figure is a median of these zones, so check which area your address belongs to before sizing a softener.
Slovenian suppliers report total hardness in °dH ("nemške stopinje").
Water data
| Total hardness | 9 °dH |
|---|---|
| Utility | Komunalno podjetje Velenje d.o.o. (KP Velenje) |
How Velenje compares
- Tap water in Velenje is 19 % softer than the median of the 15 cities we track in Slovenia (11 °dH).
- By hardness it ranks 12 of 15 in Slovenia (1 = hardest); 21 % of these cities have softer water.
- Nearest city with clearly softer water: Bohinjska Bistrica, 90 km away (6.1 °dH).
- Nearest city with clearly harder water: Šentjur, 27 km away (18.2 °dH).
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 Velenje
| Brand | Setting for this water |
|---|---|
| Bosch | H02 |
| Miele | 9 °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 Velenje water hard or soft?
It is hard: 160 mg/L as CaCO₃ (9.3 gpg, 9 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Velenje 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 Velenje water?
9.3 gpg, equal to 9 °dH, 16 °fH or 160 mg/L calcium carbonate.
What dishwasher salt setting should I use in Velenje?
For 160 mg/L (9 °dH) check your manufacturer's table: level 4–5.
Do I need a water softener in Velenje?
Recommended if you have a water heater, boiler or tankless unit: it saves repairs and detergent.
Source
Source: KP Velenje - Trdote pitne vode v Šaleški dolini (Informacije o trdoti vode in vsebnosti mineralnih snovi 2026), analyses NLZOH Celje (2026-01). Method: figure published by the water supplier. KP Velenje - Trdote pitne vode v Šaleški dolini (Informacije o trdoti vode in vsebnosti mineralnih snovi 2026), analyses NLZOH Celje · Outdated figure? Tell us