Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 49 10 2020 10 01 1921 1930 Noor Hamzani FARIZAN Department of Community Health, Faculty of Medicine, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia Rosnah SUTAN Department of Community Health, Faculty of Medicine, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia Kulanthayan KC MANI Department of Community Health, Faculty of Medicine and Health Sciences, University Putra Malaysia, Serdang, Malaysia 2018 10 11 2019 08 04 Background: We aimed to assess the effectiveness of the health educational booklet intervention in improving parents/guardian’s knowledge on prevention of child drowning and, the perception of drowning risk and water safety practice.  Methods: A quasi-experimental study was conducted in year 2017 in Selangor, Malaysia among 719 parents/ guardians of primary school children. The parent/guardians were randomly assigned as the intervention groups and were given a health educational Be-SAFE booklet on drowning prevention and water safety. The pretest was conducted before the intervention and posttest was done one month of intervention. The data collection tool was using a validated questionnaire on knowledge, attitude and practice for drowning prevention and water safety. Results: There were 719 respondents (response rate of 89.9%) participated at baseline and 53.7% at end line (after the intervention). Significant differences found in knowledge, attitudes and practice on drowning prevention and water safety for the intervention and control groups after the intervention (P<0.001). There was a significant difference in mean scores for knowledge and attitude before and after the intervention, whereas no significant findings noted for practices (P<0.001). Conclusion: Be SAFE booklet contributed to the increase in parents/guardian’s knowledge and attitudes towards drowning prevention and water safety to prevent the risk of child drowning. https://ijph.tums.ac.ir/index.php/ijph/article/view/14975 https://ijph.tums.ac.ir/index.php/ijph/article/download/14975/7008