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European waste water service providers see the revision of the 1991 Urban Waste Water Treatment Directive (UWWTD) as an opportunity to develop an ambitious, innovative, supportive and straight-forward new policy framework enabling operators to meet the Green Deal goals and make waste water collection, treatment and management fit for the decades to come.

Enabling the circular economy for waste water services requires the alignment of a set of directives regulating the sector. The Urban Waste Water Treatment Directive (UWWTD), the Industrial Emission Directive (IED), the Waste Framework Directive (WFD) and the Sewage Sludge Directive (SSD) are key to the collection and treatment of urban waste water and subsequent treatment and re-use of urban waste water treatment sludge (UWWTS).

Small agglomerations have been identified as a source of pollution in the evaluation of the Urban Waste Water Treatment Directive (UWWTD). Despite that small agglomerations need to be better defined in the UWWTD, this source of pollution needs to be robustly addressed for the protection of biodiversity, ecosystems and for the protection of drinking water resources.

EurEau would like to see more guidance on monitoring and control of small or even individual systems at EU level through a thorough assessment and planning for the registration and monitoring of individual sanitation systems included in River Basin Management Plans. These elements should also be easily accessible to the local drinking water operators so that they can include them in the risk assessment and risk management of the catchment area as required in the recently recast Drinking Water Directive.

Individual and other Appropriate Systems (IAS) are waste water treatment systems for one or a few households. They are authorised in certain circumstances under the Urban Waste Water Treatment Directive (UWWTD) and especially when it would be disproportionally expensive to build a sewer network to connect the waste water to a WWTP in a rural area. As the evaluation of the UWWTD revealed, IAS is one of the remaining sources of pollution in urban waters and often because of the lack of control and maintenance over them. However, with a variety of technical solutions, they offer an interesting alternative to municipal collection systems, especially with the European climate neutrality objective for 2050. In this briefing note, we explore how water-related legislation can be improved to ensure that IAS can continue to be part of the available solutions for sustainable waste water management.

This paper explains the technical and practical implications for Urban Waste Water Treatment Plants (UWWTP) regarding the legal problems triggered by the Weser Ruling. It suggests possible solutions to look forward.