26That implies that, during the procedure for approval of a project, and therefore before the decision is taken, the competent authorities are required, under Article 4 of Directive 2000/60, to check whether that project may have adverse effects on water which would be contrary to the requirements to prevent deterioration and to improve the status of bodies of surface water and groundwater (judgment of 28 May 2020, Land Nordrhein-Westfalen, C‑535/18, EU:C:2020:391, paragraph 76).
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