This chapter offers an overview of the latest advancements in the field of clean water productionClean water production and monitoring. It summarizes a selection of recent, important patents in the field and discusses the technological readiness level of the various patented systems. These patents demonstrate the ongoing efforts to develop innovative technologies and methods for water treatment applications, highlighting the importance of staying up to date with the latest advancements in the field. The chapter concludes by emphasizing the need for continued research and development in the field of clean water, to ensure access to clean and safe water for all. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.