In many parts of the world sewage is discharged directly into open water without treatment, threatening productivity and biodiversity of the world’s oceans and causing serious human health problems. In response the UNEP/GPA has developed training for municipal wastewater managers, jointly with the UNESCO-IHE Institute for Water Education and the UN/DOALOS Train-Sea-Coast Programme. The training provides participants with analytical tools, substantive information and skills on how to select, plan and finance appropriate and environmentally sound municipal wastewater management systems. The training is meant for project managers at municipal level, mandated with the task to develop and manage municipal wastewater collection and treatment systems with often very limited resources.