The main factors related to open defecation behaviour in Jorong Lubuk Koto are the lack of basic sanitation facilities and the low level of public knowledge regarding health problems due to poor sanitation. Triggering Community Led Total Sanitation (CLTS) is needed to help the community understand the diseases caused by open defecation practices and encourage community behaviour change to stop open defecation. Based on data from the Regional Technical Implementation Unit of Sialang Public Health Center, the percentage of households with pit latrines is only 31.8%. CLTS had yet to be previously implemented in Jorong Lubuk Koto. Therefore, Jorong Lubuk Koto was chosen as the location for triggering CLTS. The CLTS activities included triggering, observations, and interviews through questionnaires. The pre-test and post-test questionnaires showed the increasing knowledge of participants regarding diseases caused by open defecation practices and the community's desire to build healthy family latrines.