Nanoplastics in wastewater present a complex challenge due to their minute size and potential environmental impact. This abstract aims to explore the multifaceted dimensions of nanoplastics, focusing on monitoring, ecotoxicity, and remediation strategies in wastewater. Nanoparticles originate from diverse sources, including breakdown of larger plastics and direct release of nano-sized materials. Despite their small size, nanoplastics exhibit prolonged persistence, mobility, and potential bioaccumulation, raising concerns about their impact on aquatic ecosystems and human health. Monitoring nanoplastics in wastewater requires advanced techniques such as electron microscopy, spectroscopy, and chromatography due to their minute size and complex nature. Understanding their fate and transport within treatment systems remains a critical area of research, necessitating improved detection and quantification methods for accurate assessment. Ecotoxicological studies reveal the adverse effects of nanoplastics on aquatic organisms, including disruption of biological functions, ingestion by microorganisms, and potential transfer through the food chain. These findings underline the insistence to address nanoplastics’ ecological implications and their long-term repercussions on ecosystems. Remediation strategies for nanoplastics in wastewater are in budding stages, with emerging techniques exploring adsorption, filtration, and advanced oxidation processes. Nanotechnology-based approaches and innovative materials hold promise for efficient removal, but their scalability, cost-effectiveness, and environmental impact require thorough evaluation. In conclusion, nanoplastics in wastewater present a multifaceted challenge, demanding interdisciplinary research and collaborative efforts. Monitoring their presence, understanding ecotoxicity, and developing effective remediation techniques are pivotal for mitigating their adverse effects on ecosystems and safeguarding environmental and human health. Continued research and technological advancements are essential to address this intricate issue and pave the way for sustainable wastewater management practices.