Yangon City Development Committee (YCDC) has to improve and extend appropriate sewerage systems and develop community plants or individual treatment facilities on sites for human waste and gray water together in order to create clean water environment. The existing sewerage system in the Greater Yangon treats only human waste and do not treat gray water which causes contamination in rivers, lakes and marches. New sewerage system can treat both human waste and gray water in order to create clean water environment amenity. The construction of sewerage facilities needs a long term and a large sum of cost. . Thus the installation should be implemented step by step in accordance with the appropriate construction plan.
YCDC will develop appropriate sewerage system and drainage system, they give citizens safety and good amenity.
Preliminary Development Plan in CBD
To utilize existing infrastructure effectively and transfer to the new system of collecting sewage smoothly. Existing sewage collecting system, like using compressor and ejector, must put an end because of the expiration of its useful life now. The gravity flow system will be applied basically for collecting sewage.
Safe city/town without flood damage
To create clean water environment as the result of collecting gray water into sewerage system. 
Environmental Friendly: Solid Waste Management