As long as your website meets the requirements for copyright protection (in particular a requirement of originality), copyright will arise automatically. Therefore, although it is good practice to include a copyright notice on your webpage, the existence of copyright will not depend on this notice. A copyright notice is, however, useful for the purpose of informing website users of the existence of rights over the content (and thus preventing unintentional infringements from occurring); in certain jurisdictions, it will also be useful in court as a means of proof in case of an infringement dispute.
A copyright notice is usually presented as follows: © [name of copyright holder] [year of creation – current year] [with a possible additional mention such as “All rights reserved”].
Please note that an EU-funded project or a consortium does not have legal personality, and therefore cannot as such be legally considered a copyright holder. Therefore, it is advisable to mention the name of the project partner(s) which hold the copyright in the website, rather than the name of the project. However, if many project partners are involved and are all co-owners, an alternative could consist in mentioning “[name of project] partners” as the right holders, in the copyright notice.