The purpose of the research was to determine the environmental behavior, knowledge and culture of the population in relation to single-use polyethylene terephthalate (PET)-based bottles, as well as to know anonymously the level of use of reusable containers through the questionnaire method. The research was conducted for three days using social networks, and 367 people from different sphere of the population, people of different ages and professions were directly acquainted with the questions of the questionnaire, but 167 (45 %) respondents answered the questions actively. According to the research results, it was found that 72% of 121 respondents do not carry reusable water containers with them regularly. It was found that 54% of 117 respondents bought reusable containers for their children and relatives, 82% of 117 respondents said that reusable containers are not a serious threat to nature, 74% of 113 respondents said that most people must use reusable containers. And 73% of 113 respondents said that the use of reusable containers is one of the main factors for solving the plastic problem in the world.