Decentralized Wastewater and Septage Management in Asia – Challenges and Opportunities

Event: WEPA International Workshop on “Roles of decentralized wastewater and septage management in addressing the challenges and accelerating the progress of Sustainable Development Goal 6 (SDG6) in Asia”
Date: held on 21st February 2019 (Tokyo, Japan)
Conference Proceeding

The Asia-Pacific region, with over 4.6 billion people by 2016, is the home of nearly 60% of the world population. Rapid population growth, urbanization, industrialization and changes in consumption patterns, including shifting diets toward highly water-intensive foods such as meats, which have led to a significant increase in water demand, and placed a huge burden on water infrastructures in the region. Unfortunately, it is estimated that from 80% to 90% of generated wastewater, especially in developing countries within the region, is discharged directly into water bodies without any treatment or only partially treated by simple on-site sanitation systems such as septic tanks, causing substantial levels of contamination in ground and surface water sources, as well as coastal ecosystems, and placing a huge economic impact. This presentation gives an overall picture on how decentralised wastewater and septage management could address these challenges as well as facilitate the countries in achieve relevant targets in Sustainable Develop Goal 6 on water and sanitation. Opportunities for further improvements and implementing decentralised sanitation approach in practice.