Providing access to clean water and proper sanitation is important in ensuring good health and well-being for individuals and communities. SDN Weakkembar is an elementary school located in an area that does not yet have adequate access to clean water sources. Therefore, socialization about simple water filtration is an important step to increase sanitation awareness in this school. This socialization aims to explain the importance of clean water and good sanitation, as well as to introduce and socialize simple water filtration methods to students at SDN Lemahkembar. This simple water filtration method involves using inexpensive and readily available materials, such as sand, gravel, cotton wool, tissues, used bottles, and dacron to rid the water of impurities and contaminants. The socialization was carried out through a series of educational activities, including presentations, group discussions, and practical demonstrations on how to make and use a simple water filtration device. Apart from that, sanitation awareness campaigns were also carried out, which involved putting up posters, distributing brochures about the importance of personal and environmental hygiene. The results of this activity show that the socialization of simple water filtration has succeeded in increasing sanitation awareness at SDN Weakkembar. School students become more aware of the importance of using clean water and good sanitation to maintain their health. They are also skilled in building and using simple water filtration devices, which can help them gain access to safer, clean water. With this socialization, it is hoped that sanitation awareness at SDN Lemahkembar will continue to increase and become a habit that is maintained. This can have a positive impact on the health of students and school girls and encourage sustainable behavior changes related to sanitation in the surrounding community.