Participatory environmental governance is increasing worldwide. One area where such governance forms are apparent is in the management of water resources. For example, in the European Union the Water Framework Directive mandates several forms of involvement via its legal obligations. Under the Directive, implementing agencies should provide information on river basin management planning to the public, consult citizens and stakeholders during planning and actively involve interested parties in the plan process. Yet questions arise over the success of participatory processes on the ground in EU member states. In this study, participation was therefore evaluated in WFD river basin planning in England and Wales using process, community, output and outcome-related indicators. Research was conducted through extensive quantitative and qualitative data collection over a long temporal scale within case analyses of the Anglian, Humber and South West river basin districts. Results suggest that while the first phase of river basin management largely met legal requirements, the actual success of participatory water governance was mixed. On this basis, recommendations are made for enhancing participation in future river basin planning through national and EU policy.