Water hardness in Nova Gorica
10.4 °dH very hard
Tap water in Nova Gorica is very hard: 10.4 °dH (187 mg/L · 10.9 gpg · 18.6 °fH).
Source: VIK Nova Gorica - Rezultati spremljanja pitne vode (2026) · data checked 2026-10-22
Range across supply zones: 121–252 mg/L.
VIK Nova Gorica publishes one utility-wide figure: average total hardness between 6.8 and 14.1 °dH across its supply. There is no per-zone table, so this page cannot say which end applies to your street, and the page itself carries no date. The area is karst, where hardness can vary with the source and the season, so treat the midpoint as a rough guide only.
Slovenian suppliers report total hardness in °dH ("nemške stopinje").
Water data
| Total hardness | 10.4 °dH |
|---|---|
| Utility | VIK Nova Gorica d.d. |
How Nova Gorica compares
- Tap water in Nova Gorica is 5 % softer than the median of the 15 cities we track in Slovenia (11 °dH).
- By hardness it ranks 9 of 15 in Slovenia (1 = hardest); 43 % of these cities have softer water.
- Nearest city with clearly softer water: Bohinjska Bistrica, 42 km away (6.1 °dH).
- Nearest city with clearly harder water: Grosuplje, 78 km away (20.3 °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 Nova Gorica
| 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 Nova Gorica water hard or soft?
It is very hard: 187 mg/L as CaCO₃ (10.9 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 Nova Gorica 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 Nova Gorica water?
10.9 gpg, equal to 10.4 °dH, 18.6 °fH or 187 mg/L calcium carbonate.
What dishwasher salt setting should I use in Nova Gorica?
For 187 mg/L (10.4 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Nova Gorica?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: VIK Nova Gorica - Rezultati spremljanja pitne vode (2026). Method: computed from supplier's calcium and magnesium. VIK Nova Gorica - Rezultati spremljanja pitne vode · Outdated figure? Tell us