International Water Management Institute (IWMI) is located in . . . . . . . .

International Water Management Institute (IWMI) is located in Sri Lanka.
The International Water Management Institute (IWMI) is a non-profit, scientific research organization focusing on the sustainable use of water and land resources in developing countries. It is headquartered in Colombo, Sri Lanka, with regional offices across Asia and Africa.
It focuses on improving how water and land resources are managed, to underpin food security and reduce poverty while safeguarding the environment.