SWD - Article 13
1. For the purpose of applying this Directive, Member States shall provide the Commission with information concerning:
(a) the waters designated in accordance with Article 4(1), in summary form;
(b) the revision of the designation of certain waters in accordance with Article 4(2);
(c) the provisions laid down in order to establish new parameters in accordance with Article 9.
2. Where a Member State applies the provisions of Article 11, it shall forthwith notify the Commission thereof, stating its reasons and the periods anticipated.
3. More generally, Member States shall provide the Commission, on a reasoned request from the latter, with any information necessary for the application of this Directive.