Article L2221-13 of the French General Code of Local Authorities
Where the régies are of inter-municipal interest, they may be operated: 1° Either under the management of a commune acting, vis-à-vis the other communes, as a concessionaire; 2° Or under the management of a syndicate formed by the communes concerned. If this syndicate is formed exclusively with a view to operating an administrative or industrial or commercial service, the communes may request that the administration of the syndicate be merged…