OECD Environmental Performance Reviews provide independent assessments of countries' progress towards their environmental policy objectives. Reviews promote peer learning, enhance government accountability, and provide targeted recommendations aimed at improving environmental performance, individually and collectively. They are supported by a broad range of economic and environmental data, and evidence-based analysis. Each cycle of Environmental Performance Reviews covers all OECD countries and selected partner economies. The most recent reviews include Chile and France (2016). This report is the third Environmental Performance Review of Korea. It evaluates progress towards sustainable development and green growth, with a focus on waste and materials management, and environmental justice.