Wastewater management is an emerging issue in urban areas, mostly
in low-income countries including Nepal. Considering the need of
better wastewater management, there is a need for updated data and
information on wastewater generation and treatment. This paper presents
the estimated wastewater generation in urban areas and current status
of wastewater management in Nepal. The intensive literature review
on wastewater management including production and treatment were
done to gather data and information. The data shows that 70% of total
urban wastewater production is collected in on-site sanitation system and
30% is collected by sewer. The theoretical estimation of total wastewater
production in urban area is 867 MLD. It was found that only 7% of
wastewater is treated in Nepal. Both centralized and decentralized systems
were found to be implemented at various scale.