The potential and demonstrated risks presented by plastics are high. Meeting the challenge will require urgent preventive action. This report reviews some of the most relevant technologies currently in use and supporting solutions that address contamination by macroplastics and microplastics from source to sea. Where data are available, the report looks at the effectiveness, capital expenditure, and operation and maintenance (O&M) costs of different technologies and their suitability under various conditions. This could help enable policymakers and practitioners set priorities and select the technologies that would be most cost-effective and suitable in their local context