One question we often get from visitors to Croatia is “Is the tap water safe to drink?”. The answer is mostly yes. It is certainly safe in Southern Dalmatia and especially in Dubrovnik, which has a great natural water source nearby. Water is generally safe to drink throughout Croatia, but it is always best to check with the locals in case it is temporarily considered undrinkable. For instance, during or after a heavy rain in Dubrovnik the water often becomes murky, and locals recommend drinking bottled water until it clears up.
At most restaurants diners will be offered still or sparkling water. These are bottled waters, and diners will be charged for each bottle they drink. The most popular Croatian bottled water is Jana, which has become a fashionable water to drink in and outside of the country, with even some New York City shops carrying it. It is advisable to check the price of bottled water before ordering at restaurants, as it can sometimes be 30 to 40 Kuna (4 to 5 Euros) per bottle. If you prefer to drink tap water (which is free of charge), you can usually order it by the glass or pitcher. The waiter may bring you a bottle of water anyway, but be persistent, and send it back if necessary or you will be charged.