Water pollution has become a pressing environmental issue due to the growing presence of contaminants such as heavy metals, pesticides, pharmaceuticals, dyes, and microplastics in water bodies. The need for efficient, sustainable, and cost-effective water remediation technologies has intensified to ensure safe water for human consumption, agriculture, and industrial use. Recent advances in water remediation approaches aim to enhance the effectiveness of traditional methods while incorporating novel materials and eco-friendly strategies. This chapter highlights the advanced technologies that are now being used to treat the waste water.