Latar Belakang: Sanitasi lingkungan mencakup pengelolaan faktor-faktor yang mempengaruhi kesehatan, seperti kondisi lingkungan rumah, tempat penampungan air, dan sistem pengelolaan sampah, yang dapat menjadi tempat berkembang biaknya vektor penyakit. Sanitasi yang buruk meningkatkan risiko penyebaran Demam Berdarah Dengue (DBD), yang disebabkan oleh virus dengue dan ditularkan melalui gigitan nyamuk Aedes aegypti dan Aedes albopictus. Tujuan: Untuk mengetahui hubungan sanitasi lingkungan dengan kejadian demam berdarah dengue (DBD). Metode: Penelitian ini menggunakan desain penelitian survey Cross-Sectional dengan metode pendekatan Cross-Sectional. Sampel berjumlah 110 responden yang diambil dengan menggunakan teknik Stratified Random Sampling. Pengumpulan data menggunakan kuesioner. Data dianalisis menggunakan uji Chi-Square. Hasil: Hasil menunjukkan terdapat hubungan signifikan antara kondisi lingkungan rumah (p-value = 0,001), tempat penampungan air (p-value = 0,001), dan sistem pembuangan sampah (p-value= 0,001) dengan kejadian DBD di Desa Sibanggede, Kecamatan Abiansemal. Hasil uji statistik Chi-Square menunjukkan p-value (0,001) < 0,005 yang berarti ada hubungan antara sanitasi lingkungan terhadap kejadian DBD. Kesimpulan: Terdapat hubungan yang signifikan antara Sanitasi Lingkungan dengan Kejadian DBD di Desa Sibanggede, Kecamatan Abiansemal. Kata Kunci: Demam Berdarah Dengue, Sanitasi Lingkungan

Background: Environmental sanitation includes the management of factors that influence health, such as the environmental conditions of homes, water reservoirs, and waste management systems, which can become breeding grounds for disease vectors. Poor sanitation increases the risk of spreading Dengue Hemorrhagic Fever (DHF), which is caused by the dengue virus and transmitted through the bites of Aedes aegypti and Aedes albopictus mosquitoes. Therefore, preventing dengue fever requires good environmental management to reduce the breeding places for mosquitoes that carry the virus. Purpose: To determine the relationship between environmental sanitation and the incidence of dengue hemorrhagic fever (DHF). Methods: This study uses a Cross-Sectional survey design with a Cross-Sectional approach. A total of 110 respondents were selected using Stratified Random Sampling technique. Data collection was done using a questionnaire. The data were analyzed using the Chi-Square test. Results: This study examines the relationship between home environmental conditions, water reservoirs and waste disposal systems and the incidence of dengue fever. The results show that there is a significant relationship between the condition of the home environment (p-value = 0.000), water storage (p-value = 0.000), and waste disposal system (p-value = 0.000) with the incidence of dengue fever in Sibanggede Village, Abiansemal District. The results of the Chi-Square statistical test show a p-value (0.000)