Transnational monitoring database of microplastics in drinking water

The project conducted a year-long pilot sampling campaign at nine sites, covering three major aquifer types: karst, intergranular, and surface water/bank filtration. A novel, harmonized sampling methodology was applied—aligned with the EU Drinking Water Directive (2020/2184) and its 2024 delegated act on microplastic measurement. This marked the first transnational application of such standardized procedures, significantly improving data comparability and policy integration across diverse administrative settings.

To tackle the widespread lack of accessible occurrence data, the project developed a Transnational Monitoring Database—compiling quarterly results from all pilot sites and made freely available to support cross-border cooperation.

Alongside campaign results, the project produced technical and guidance documentation detailing methodologies and site-specific insights. Overall, MicroDrink has boosted regional preparedness and knowledge among key stakeholders, addressing the emerging challenge of microplastic contamination in drinking water resources.