39That provision imposes two objectives that are separate, although intrinsically linked. First, in accordance with Article 4(1)(a)(i) of Directive 2000/60, the Member States are to implement the necessary measures to prevent deterioration of the status of all bodies of surface water (obligation to prevent deterioration). Second, pursuant to Article 4(1)(a)(ii) and (iii), the Member States are to protect, enhance and restore all bodies of surface water with the aim of achieving good status by the end of 2015 at the latest (obligation to enhance).
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