MIL-OSI Europe: Answer to a written question – Call for the protection of human health in Slovenia’s capital city Ljubljana on account of the construction of the environmentally controversial C0 sewer, financed by EU funds – E-000791/2025(ASW)

Source: European Parliament

The Ljubljana Wastewater Collection and Treatment Plant project is essential for Slovenia to meet its obligations under the Urban Wastewater Treatment Directive[1].

In its ruling of 30 November 2023, the Court of Justice of the European Union found that Slovenia is not in compliance with the directive due to insufficient collection, treatment, and monitoring of wastewater in the agglomeration of Ljubljana[2].

While the realisation of the wastewater treatment system project in Ljubljana — including the C0 connecting channel — is important to ensure compliance with EU legislation and that the Court’s ruling is met, the Commission emphasises the responsibility of the Member State to implement the project while protecting the environment and human health.

Should the project be found in breach of the law, the Commission expects the national authorities to take appropriate corrective action.

The Commission will continue to follow developments closely, including ongoing administrative procedures regarding the environmental consent and building permit, to ensure EU funds are used appropriately and in line with environmental and human health objectives.

  • [1] https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=celex%3A31991L0271
  • [2]  C-328/22: https://curia.europa.eu/juris/document/document.jsf?text=&docid=281904&pageIndex=0&doclang=EN&mode=req&dir=&occ=first&part=1&cid=1284411
Last updated: 10 April 2025

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