Background Since wastewater treatment processes require large investments, it is very important that up-to-date, appropriate and viable solutions be implemented. Failing to do so delays the reduction of environmental pressure and results in ineffective use of taxpayers’ money. Previous LIFE projects have identified a wide range of available solutions, however, knowledge of these techniques and processes is insufficiently widespread, creating a barrier to their adoption. Objectives The SHOWW project aims to lower barriers so as to allow innovative, viable and appropriate wastewater treatment solutions to become feasible investment choices. Specifically, the project aims to: Facilitate the dissemination and replication of wastewater treatment and management solutions that already proved successful in previous LIFE projects; Increase knowledge and awareness about these solutions among policy-, decision- and opinion-makers, technical and industrial advisors, professionals and consultants in both the municipal and industrial wastewater treatment sectors; Provide an interactive environment where proven solutions can interface with needs and expectations, individualising the best fitting solutions to connect LIFE outcomes with emerging needs and requirements; and Increase compliance with regulatory constraints set out by European environmental legislation, thus contributing to the implementation of the Urban Wastewater Directive.Expected results: The main outcome of the project will be an increase in the number of cases in which appropriate solutions derived from previous LIFE projects are examined in view of new investments and/or strategy changes. Other specific results include: A range of solutions grouped by implementation issues, accessible to the public online; Widespread awareness and understanding of existing innovative solutions among wastewater operators: the project will reach operators responsible for treating 75% of municipal wastewater in Italy; a small number of operators in Belgium will also be contacted; Reduction of CO2 and NOx emissions (amounts to be determined by feasibility studies); A majority of stakeholders will be informed of the existence of up-to-date, appropriate and viable solutions regarding wastewater management and treatment derived from previous LIFE projects, which they can investigate through the project's knowledge base and help desk; A help desk for more in-depth questions about each solution, along with a taskforce of promoters (eight professionals); Some 80 Italian operators will investigate the possibility of including LIFE-derived solutions within their current investment plans; and A total of 320 professionals will take part in technical workshops (four in all) covering the most debated issues in the wastewater treatment sector.