Urban water reuse in agriculture in the Bengal Delta

Coastal region of Bangladesh is highly vulnerable to climate change and urbanization induced environmental pollution is threatening the access to good quality and quantity drinking as well as irrigation water. World Bank study on climate change effect on Bangladesh estimated that by 2050 river water resource for irrigation will shrunk by 29.7%.


  • Water re-use in Bangladesh is yet to be realized due to a number of reasons including inadequate knowledge on proper reuse practice, inadequacy of wastewater infrastructure, policy regulations etc.
  • Annually urban areas of Bangladesh generate 725 million m3 of wastewater which can be an alternative as future irrigation source.


The aim of the project is to develop a sustainable wastewater management framework integrating risk mitigation strategies for safe re-use in agriculture.

Expected Outcome

  • Assessment of irrigation water demand in peri-urban agriculture and wastewater generation in the urban areas
  • Understanding the spatial and temporal variation of surface water quality
  • Quantitative Microbial Risk Assessment (QMRA) for the use of WW in agriculture
  • Analyzing and mapping stakeholder’s perception towards planned water re-use
  • Scenarios for wastewater treatment options facilitating safe re-use in agriculture