Reclaimed water, also known as recycled water or wastewater reuse, refers to treated wastewater that is used for non-potable purposes such as irrigation, industrial processes, or toilet flushing. Reclaimed water is an increasingly important resource as populations grow and water scarcity becomes a more pressing issue. Research in this area focuses on improving treatment processes to ensure the safety and quality of reclaimed water, developing regulations and policies for its use, and assessing the environmental and public health impacts of recycling wastewater. Additionally, researchers are investigating the potential for using advanced treatment technologies to make reclaimed water safe for potable uses, known as water recycling or direct potable reuse.