One of the reasons for environmental quality degradation is the behavior of the community in treating household waste. Contamination of rubbish to the environment contributes to contaminating groundwater for household consumption, which results in disease. This type of descriptive quantitative research analyzes the impact of improper waste disposal and the effect of providing waste management interventions and training on changes in household waste management practices. The study was conducted in North Sinjai-Regency, South Sulawesi Province, Indonesia, with 40 respondents who are people who live in the Lappa area. The research used a quasi-experimental design with one group pre-and post-test system. The results showed an impact due to the improper disposal of waste on diarrhea disease 10%, dengue fever 15%. The provision of interventions and training has effectively promoted changes in practices in household waste management.