[2] The communauté urbaine had its origins in the creation in 1990 of a District of Greater Caen (DGC) which consisted of 18 communes.

Since then the grouping transformed itself in 2002 into an Agglomeration called the Communauté d'agglomération du Grand Caen.

[8] Four communes of the urban unit of Caen (Baron-sur-Odon, Fontaine-Étoupefour, Mondrainville and Rots) were not part of the communauté d'agglomération.

[9] In accordance with the provisions of the Chevènement Act of 12 July 1999, the responsibilities delegated by the member municipalities of Caen La Mer are divided into three groups: These were determined by the decision of the Community Council of 21 January 2005.

Contractual arrangements for urban development, local development and the economic and social integration of community interests (e.g. the City Contract and Urban Contract for social cohesion, the Grand City project and ANRU convention, and the local integration program for the economy (PLIE) The community has all the skills of the member communes to monitor, collect and treat wastewater through two stations.