Dhaka, Oct 30 (UNB) - Bangladesh on Wednesday signed a $100 million financing agreement with the World Bank to ensure improved water supply, sanitation, and drainage system in 30 selected municipalities, benefitting about 600,000 people.  Economic Relations Division (ERD) Secretary Monowar Ahmed and World Bank Country Director for Bangladesh and Bhutan Mercy Tembon signed the agreement on behalf of their respective sides at the Economic Relations Division.