Resumo. Water is a vital natural resource for the existence of living beings, it would be impossible without it there is life on the planet, however, a finite resource, which has an economic value, worthy of rational and conscious use. The objective of this work was the development of students' perception of the 7th year of primary education in a public school about the conscious of the use of water. The same was developed in a public school in the municipality of Pombal - PB, with a group of 40 students enrolled in the 7th grade of elementary school. It was applied 40 questionnaires containing 12 questions in order to make a survey about students 'prior knowledge on the subject, but also develop the students' perception about the conscious use of water.  By applying a didactic sequence, with the application of a questionnaire, a lecture, a visit to canal station and water treatment, and finally, presentation of a play. There were several answers when asked about the usefulness of water for drinking, bathing, cooking and irrigation, were the most cited. With respect to the origin of the water they use the students answered wells, ponds, rivers, tanks and CAGEPA. However, there is a need for educational campaigns that can facilitate the learning of them on the subject.