Urban Wastewater Treatment Directive (UWWTD)

The Urban Wastewater Treatment Directive (UWWTD)¹ (Directive (EU) 2024/3019, recast) is the central EU legal framework governing the collection, treatment, and discharge of urban wastewater to protect the environment and human health. The recast directive significantly strengthens existing requirements and expands the scope of application, while explicitly linking wastewater management to the EU’s 2050 climate-neutrality objective through reduced greenhouse gas emissions and improved energy performance in the sector.

The directive expands its scope to include agglomerations of 1,000 population equivalents or more and strengthens wastewater treatment requirements. All covered settlements must apply secondary treatment to reduce organic pollution, while larger plants and those discharging into sensitive waters are required to remove nutrients such as nitrogen and phosphorus. The recast also introduces quaternary treatment for selected installations, particularly large plants and high-risk locations, to remove harmful micropollutants, including pharmaceutical and cosmetic residues. In addition, the directive integrates energy and climate objectives by requiring wastewater treatment plants with a capacity of 10,000 p.e. or more to achieve energy neutrality by 2045. It introduces an Extended Producer Responsibility scheme under which pharmaceutical and cosmetic producers must cover at least 80% of the costs of quaternary treatment.