Nature-based solutions for wastewater treatment in small communities – D-CLEAN workshop in Szolnok

On 10 November 2026, the Middle Tisza Ditrict Water Directorate (KÖTIVIZIG) hosted the D-CLEAN project’s first workshop and stakeholder meeting in Szolnok, Hungary. More than 30 participants were welcomed by Tamás Rentz, Deputy State Secretary responsible for the water utility sector, and Gábor Harsányi, Deputy Technical Director of KÖTIVIZIG.

The event brought together representatives of municipalities, nature conservation organisations and the water authority, KÖTIVIZIG staff involved in the pilot area, and experts from the South Transdanubian Water Directorate (DÉDUVIZIG) based in Pécs, the General Directorate of Water Management (OVF), and Priority Area 4 – Water Quality of the European Union Strategy for the Danube Region.

The technical programme focused on the recast EU Urban Wastewater Treatment Directive. The new legislation extends the obligations for wastewater collection and biological treatment to agglomerations with a population equivalent of 1,000 or more. For newly covered agglomerations with a population equivalent between 1,000 and 2,000, the general compliance deadline is 31 December 2035. Preparing for these requirements and identifying sustainable solutions suited to local conditions represent significant tasks for Hungary and other Central and Eastern European EU Member States within the Danube River Basin.

The presentations reviewed wastewater and stormwater management across KÖTIVIZIG’s operational area, alongside opportunities for nature-based treatment and water retention. Numerous good practices from Slovenia and Austria illustrated approaches suitable for smaller communities.

The meeting provided an opportunity to discuss local needs, experiences and technical considerations. The D-CLEAN project supports this dialogue and international exchange of experience, helping small communities select suitable wastewater and stormwater management solutions.