Sorry, I meant the the French approvals list at www.assainissement-non-collectif.developpement-durable.gouv.fr/article.php3?id_article=185. However, since I posted I've received an email from the Biorock manufacturer with the formal approval document No 2010-026 attached, dated 24th December. I'm strongly minded to go ahead with this system because of its claimed performance, the fact that it uses no power and can cope with being unused for up to six months, which is good for our holiday home