
Established in April 2007, Onema is a national agency active in the field of environmental French public service.
Created by the Law on water and aquatic environments, dated 30 December 2006, and the implementation decree dated 25 March 2007, it operates under the supervision of the ministry in charge of ecology and sustainable development.
Onema organises and produces high-level science and technology advice to assist in formulating, implementing and evaluating public water policy.
Its mission is to contribute to overall and sustainable management of water resources and aquatic ecosystems, with a view to restoring water quality and reaching the good chemical and ecological status by 2015 set by the European Water framework directive, adopted on 23 October 2000.