Water hyacinth (WH), a globally recognized invasive species, poses a substantial threat to aquatic biodiversity and ecosystems. Traditional control methods involving chemical herbicides contribute to secondary water pollution and generate organic waste. This study introduces a sustainable approach by repurposing waste from Processed Water Hyacinth (PWH) into adsorbents, showcasing its potential for water resource remediation. The critical global need for clean water underscores the importance of this research. Investigating various remediation approaches, the study emphasizes PWH’s role in phytoremediation and the removal of diverse organic contaminants, with a specific focus on organic dyes. This underscores the versatile applications of PWH-based adsorbents. The study delves into the intricate mechanisms governing adsorption processes, providing depth to our understanding of PWH-based water remediation. The imperative for future research to harness PWH’s potential in remediating water resources is underscored, offering a pathway for effective and environmentally responsible water resource management.