Diarrhea is still the ten most diseases in the working area of the Pampangan Health Center. The incidence rate of diarrhea in the working area of Pampangan Health Center in 2016 was 26.2% per 1000 children under five to 45.8% per 1000 children in 2018. This study aims to analyze the relationship of household sanitation with the incidence of diarrhea in infants. This study used a cross sectional…