Water hardness in Varazdin
339 mg/L very hard
Tap water in Varazdin is very hard: 339 mg/L (19.8 gpg · 19 °dH · 33.9 °fH).
Source: Varkom d.o.o. - Tvrdoće (hardness page) (2026) · data checked 2026-10-22
Range across supply zones: 286–393 mg/L.
Varkom publishes one supply-wide range for Varaždin: 16 to 22 °dH. There is no zone table and no date on the page, so we cannot say which end applies to your street or how recent the figure is. The utility does not state the source geology on that page. Ask Varkom for a dated analysis before sizing a softener.
Croatian suppliers report total hardness in mg/L CaCO₃ or °dH.
Water data
| Total hardness | 339 mg/L |
|---|---|
| Utility | Varkom d.o.o. |
How Varazdin compares
- Tap water in Varazdin is close to the median of the 13 cities we track in Croatia (339 mg/L).
- By hardness it ranks 7 of 13 in Croatia (1 = hardest); 50 % of these cities have softer water.
- Nearest city with clearly softer water: Čakovec, 12 km away (218 mg/L).
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 Varazdin
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 19 °dH |
| AEG / Electrolux | 5 |
| Beko | 5th |
| Hoover | S3 |
| 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 Varazdin water hard or soft?
It is very hard: 339 mg/L as CaCO₃ (19.8 gpg, 19 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Varazdin safe to drink?
Hardness is not a health issue; it is about limescale, taste and appliances. Mains water must meet national drinking-water standards. Croatian suppliers report total hardness in mg/L CaCO₃ or °dH.
How many grains per gallon is Varazdin water?
19.8 gpg, equal to 19 °dH, 33.9 °fH or 339 mg/L calcium carbonate.
What dishwasher salt setting should I use in Varazdin?
For 339 mg/L (19 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Varazdin?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: Varkom d.o.o. - Tvrdoće (hardness page) (2026). Method: computed from supplier's calcium and magnesium. Varkom d.o.o. - Tvrdoće (hardness page) · Outdated figure? Tell us