Water hardness in Maribor
14.5 °dH very hard
Tap water in Maribor is very hard: 14.5 °dH (259 mg/L · 15.1 gpg · 25.9 °fH).
Source: Mariborski vodovod d.o.o. - Trdota vode na crpaliscih (2026) · data checked 2026-10-22
Range across supply zones: 18–357 mg/L.
14 supply zones — hardness varies by neighbourhood; the figure above is the median.
Hardness by district / supply zone
| °dH | mg/L | ||
|---|---|---|---|
| Areh in Mariborska koca | 7 | 125 | hard |
| Betnava 2 | 13.5 | 241 | very hard |
| Betnava 3 | 15.5 | 277 | very hard |
| Betnava 4 | 16.5 | 295 | very hard |
| Bohova 1 | 16 | 286 | very hard |
| Cersak | 16.5 | 295 | very hard |
| Dobrovce | 18 | 321 | very hard |
| Duh na Ostrem vrhu | 16 | 286 | very hard |
| Gaj | 3 | 54 | soft |
| Pivola in Pohorski dvor | 2 | 36 | soft |
| Ruse 1 | 11.5 | 205 | very hard |
| Selniska dobrava | 13.5 | 241 | very hard |
| Srednje | 3.5 | 63 | moderately hard |
| Vodnjaki na Vrbanskem platoju (vtocno mesto 1 in 2) | 16.5 | 295 | very hard |
Mariborski vodovod publishes a hardness range for each pumping station, and they differ a lot. The wells on the Vrbanski plato print 14 to 19 °dH, while the Pohorje stations such as Gaj (1 to 5 °dH) and Pivola (1 to 3 °dH) are soft. Which water reaches a tap depends on the street, so ask the utility for your supply area. The utility page carries no measurement date; the year shown is the page footer.
Slovenian suppliers report total hardness in °dH ("nemške stopinje").
Water data
| Total hardness | 14.5 °dH |
|---|---|
| Utility | Mariborski vodovod d.o.o. |
How Maribor compares
- Tap water in Maribor is 32 % harder than the median of the 15 cities we track in Slovenia (11 °dH).
- By hardness it ranks 7 of 15 in Slovenia (1 = hardest); 57 % of these cities have softer water.
- Nearest city with clearly softer water: Velenje, 46 km away (9 °dH).
- Nearest city with clearly harder water: Šentjur, 42 km away (18.2 °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 Maribor
| Brand | Setting for this water |
|---|---|
| Bosch | H04 |
| Miele | 14 °dH |
| AEG / Electrolux | 3 |
| Beko | 4th |
| Hoover | S2 |
| LG | H3 |
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 Maribor water hard or soft?
It is very hard: 259 mg/L as CaCO₃ (15.1 gpg, 14.5 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Maribor 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 Maribor water?
15.1 gpg, equal to 14.5 °dH, 25.9 °fH or 259 mg/L calcium carbonate.
What dishwasher salt setting should I use in Maribor?
For 259 mg/L (14.5 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Maribor?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Mariborski vodovod d.o.o. - Trdota vode na crpaliscih (2026). Method: computed from supplier's calcium and magnesium. Mariborski vodovod d.o.o. - Trdota vode na crpaliscih · Outdated figure? Tell us