This document discusses Implementation Roadmaps (IRs) that were created following the 7th World Water Forum to guide collective action on water issues until the next forum. It focuses on IR 4.2 on effective water governance. IRs address 16 themes through objectives and actions, and progress is monitored through biannual reports and annual meetings. The OECD Water Governance Initiative champions IR 4.2, which has 3 focus areas, 12 objectives, and 31 ongoing actions on improving effectiveness, efficiency, and trust in water governance.