We wish to inform you that we have received approval from IWA for publishing research articles in a special issue of IWA Blue-Green Systems journal. The submission is categorized as a special issue: IWA SWSM 2023. All the research topics presented at IWA SWSM 2023 conference are eligible for publication in this journal, with a manuscript submission deadline of March 3, 2024. Manuscripts should be submitted in Microsoft Word format. Papers recommended by guest editors are subjected to a regular review process of the journal. Please kindly note that authors whose papers are accepted for publication in Blue-Green Systems must pay an article processing charge.