Article R2342-4 of the French General Code of Local Authorities
Products of communes, communal and inter-communal public establishments and any public body resulting from an agreement between communes or between communes and any other public body or public establishment, which are not assessed and liquidated by the State tax departments in execution of the laws and regulations in force, are recovered: – either by virtue of enforceable judgments or contracts; – or by virtue of revenue orders or tax rolls…