In this conference, the INNOQUA team and a group of invited experts explored multiple perspectives – highlighting the potential for nature-based approaches to wastewater treatment around the world as well as exploring R&D and commercial opportunities in this sector. INNOQUA has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 689817. Programme: 10:00-11:30 The INNOQUA project: experience with earthworms, water fleas and microalgae for decentralised wastewater treatment Jean-Baptiste Dussaussois, NOBATEK/INEF4 (France): INNOQUA project - an introduction Eoghan Clifford, National University of Ireland, Galway: Lumbrifiltration - key results from demonstration sites Victoria Salvado, University of Girona (Spain): Daphniafilter: a nature based tertiary treatment Costel Bumbac, ECOIND (Romania): Microalgae based wastewater treatment system: lab and pilot results Panel discussion 11:45 - 13:15 Opportunities for decentralised nature based wastewater treatment in Europe Fabio Masi , IRIDRA (Italy): Innovative Nature based Solutions for the future smart and circular cities Sven Eggimann, EMPA (Switzerland): A European perspective on market potentials of modular wastewater treatment Tamsyn Kennedy, Scottish Water (Scotland): Opportunities for decentralized nature-based wastewater treatment for municipal utilities Gaby Dotro, Cranfield University (UK): Wetlands for wastewater treatment in the UK Panel discussion 13:30- 15:00 Workshop A. Wider perspectives on decentralised nature based wastewater treatment Ajeet Oak, TBF Environmental (India): Commercialisation and scaling up the Tiger Bio Filter technology in India Claire Furlong, IHE Delft (The Netherlands): The development and use of vermifilters in humanitarian settings Chris Buckley, University of KwaZulu Natal (South Africa) Perspectives from Africa - The Role of Urine Separation Pedestals Panel discussion Workshop B. Virtual site visits to INNOQUA demonstration facilities in Ireland and Scotland Eoghan Clifford, National University of Ireland, Galway Tamsyn Kennedy and Anna Baran, Scottish Water (Scotland)