Khulna Water Supply and Sewerage Authority (KWASA) is the nodal agency for wastewater management inside city corporation boundary as per the current statutory law. Previously in 2016, a detailed Wastewater Master Plan was prepared for Khulna City with assistance from Asian Development Bank (ADB). Subsequently, to improve the sanitation situation and the sewerage system of Bangladesh’s 3rd largest city, the Khulna Sewerage System Development Project (KSSDP) was initiated on basis of the Master Plan in 2020 and is presently under implementation phase. Now, to match with the aspired target of CWIS, updating the existing Wastewater Master Plan has become a necessity, while encompassing the KSSDP components and with an effort to expand the facilities of organised sewerage system in previously uncovered parts (and possibly some newly developed sections) within the city limits and expand other types of sanitation facilities where organised sewerage system was not feasible earlier.