Judgment of the Court (Seventh Chamber) of 30 November 2023.#European Commission v Republic of Slovenia.#Failure of a Member State to fulfil obligations – Article 258 TFEU – Directive 91/271/EEC – Collection and treatment of urban waste water – Article 4(1) and (3), as well as Articles 5 and 15 – Sections B and D of Annex I – Secondary or equivalent treatment of urban waste water from agglomerations of a certain size – More stringent treatment of discharges into sensitive areas – Monitoring of discharges from waste water treatment plants.#Case C-328/22.