Water hardness in Trogir
358 mg/L very hard
Tap water in Trogir is very hard: 358 mg/L (20.9 gpg · 20.1 °dH · 35.8 °fH).
Source: VIK Split lab results, Mjesto uzorkovanja TROGIR, period 01.09.2026-30.09.2026 (Ukupna tvrdoća mg/l, Minimum/Prosjek/Maximum) (2026-09) · data checked 2026-11-05
Range across supply zones: 295–443 mg/L.
Trogir is on the Trogir network of VIK Split. The September 2026 lab table gives a monthly average of 358 mg/L CaCO3, with a range of 295 to 443 mg/L. This is a sample from the distribution network, not a raw-water value. The utility page does not name the source in the table, but Dalmatian water usually runs through limestone karst, which tends to give hard water. Readings shift from month to month, so expect scale on kettles and heaters.
Croatian suppliers report total hardness in mg/L CaCO₃ or °dH.
Water data
| Total hardness | 358 mg/L |
|---|---|
| Utility | Vodovod i kanalizacija d.o.o. Split (VIK Split) |
How Trogir compares
- Tap water in Trogir is 6 % harder than the median of the 13 cities we track in Croatia (339 mg/L).
- By hardness it ranks 6 of 13 in Croatia (1 = hardest); 58 % of these cities have softer water.
- In Splitsko-dalmatinska it is number 5 of 5 cities; the regional median is 366 mg/L.
- Nearest city with clearly softer water: Šibenik, 38 km away (250 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 Trogir
| Brand | Setting for this water |
|---|---|
| Bosch | H05 |
| Miele | 20 °dH |
| AEG / Electrolux | 5 |
| Beko | 6th |
| 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 Trogir water hard or soft?
It is very hard: 358 mg/L as CaCO₃ (20.9 gpg, 20.1 °dH). The usual bands are soft < 60, moderately hard 60–120, hard 120–180 and very hard > 180 mg/L.
Is tap water in Trogir 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 Trogir water?
20.9 gpg, equal to 20.1 °dH, 35.8 °fH or 358 mg/L calcium carbonate.
What dishwasher salt setting should I use in Trogir?
For 358 mg/L (20.1 °dH) check your manufacturer's table: maximum level (5–7).
Do I need a water softener in Trogir?
Yes, unless you are only passing through: scale damages appliances within a few years.
Source
Source: VIK Split lab results, Mjesto uzorkovanja TROGIR, period 01.09.2026-30.09.2026 (Ukupna tvrdoća mg/l, Minimum/Prosjek/Maximum) (2026-09). Method: figure published by the water supplier. VIK Split lab results, Mjesto uzorkovanja TROGIR, period 01.09.2026-30.09.2026 (Ukupna tvrdoća mg/l, Minimum/Prosjek/Maximum) · Outdated figure? Tell us