In 2008, a public health intervention program was implemented at Trung Dung and Tan Phong wards, Bien Hoa City. Objectives: Assess the changes in the KAP of the local residents at the two wards toward measures to prevent dioxin exposure through consuming contaminated foods, pre-post interventions (2007, 2009). Method: This was a post intervention survey with a sample of 400 households randomly selected from the list of local households using systematic random sampling scheme.