On 13-14 June 2018, the Meeting for Reforming the Functions of the Thematic Working Groups in Alignment with the Sustainable Development Goals was held in Manila. A total of 5 out of 7 TWGs were represented during the meeting, namely, Air Quality TWG (Chair, Korea/Co-Chair, Thailand); Health Impact Assessment TWG (Chair, Thailand); Water, Sanitation and Hygiene TWG (Chair, Philippines); and Contingency Planning, Preparedness and Response in Environmental Health Emergencies (Chair, Philippines).