To evaluate community's acceptance of design and convenient use of the latrine model. Method: Combining on-site sampling (sampling wastewater effluent directly from the latrine model) to analyze physiochemical and micro-organism parameters at the laboratory of the Institute of Hygiene and Public Health in Ho Chi Minh city, with on-site observation on how families use the latrines to evaluate treatment efficiency of studied latrine modelResults: Physiochemical treatment efficiency - Nitrite and Nitrate concentration has been increasing gradually during sampling stages proven that degradation process of nitrogen compounds in storage of latrine models has improved.