Cartagena, the historic city where the'1983 Cartagena convention for the Protection of theCaribbean' was signed, is meeting its responsibilitiesto protect the public health of its citizens as well as thecostal marine environment through improved wastewatermanagement. Cartagena's experience can serve as aninspiration to the wider Caribbean region and provide amodel for other developing coastal cities. Water pollutioncontrol is a key issue for the world's coastal cities.Pollution emanating from domestic and industrial wastewatercan not only contaminate the ocean environment but alsodamage highly productive estuaries and bays that provide acritical ecological connection to the marine environment.Inadequate wastewater management can also pollute urbanbeaches, potentially threatening public health andundermining tourism. This technical note summarizesCartagena's experience in wastewater management forinternational dissemination and was jointly prepared by theWorld Bank, the Colombian Ministry of Environment andSustainable Development, the Cartagena water utility(ACUACAR), and the Global Partnership for the Oceans (GPO).