Independent and safe movement in the water medium is one of the basic human movement skills, and thus it, this movement also carries certain risks with it. Learning or acquiring certain swimming skills is found as the most effective way to deal with the risk in the water and to prevent drowning in the water itself. This approach emphasizes the importance of educating people about water safety and it is encouraging individuals to be aware of the seriousness of the consequences if swimming skills are not properly learned. With this research, we tried to construct and validate a measuring instrument - a survey questionnaire for assessing the attitude of competences of movement in water through twenty-two statements obtained by mapping scientific research in that area and we collected information, data and opinions of the respondents which we evaluated using a Likert scale of agreement or disagreement. All statements were divided into three subgroups depending on the values of their Pearson correlation coefficients, while the acceptable internal consistency of the statements in the questionnaire was confirmed by calculating the Cronbach's alpha value. Also, through exploratory and confirmatory factor analysis, in order to check the validity of the assumed theoretical model of the conducted questionnaire, it was determined that all multivariate assumptions were pleased, except for homoscedasticity. The recommendation of this research is to raise the awareness of the respondents, as well as the wider population, about the importance of swimming competences for safe movement in water and about the importance of education from an early age in order to prevent negative outcomes in the form of drowning in water.