Water makes up a large part of the body's total body mass and is necessary for life and health, especially for the proper functioning of physiological processes. It is important to note that fluid intake does not necessarily have to be water, it can be various types of drinks and foods that are rich in water. Many studies conducted on children and adolescents have shown that they are more susceptible to dehydration than adults. For this very reason, the goal of this research was to examine the information and habits of adolescents about hydration through a survey. The survey included general demographic data (gender, age, level of education), questions related to information. In addition, the survey examined respondents' participation in physical activity as well as their consumption of various types of beverages, fruits and vegetables. 207 people participated in the survey, of which 153 were female and 54 were male. Statistically significant differences were observed in the subjects' habits and frequency of consumption of different drinks based on gender. A statistically significant difference was observed in the confidence in consuming an adequate amount of water, with men showing significantly higher confidence than women (p=0.0235). It was also found that women consume larger amounts of fluids, except in cases where access to a toilet is not available (3.70%, p=0.0008). There was a statistically significant difference in the frequency of beer consumption (p=0.0323), with men consuming beer more frequently than women. The connection between water consumption, biological processes and general health highlights the need for adequate hydration. This research provides insight into the understanding of hydration habits and behavior of adolescents.