1. Introduction 2. Biosynthesis of Bioflocculant from Bacterial Consortium of Municipal Wastewater and its Characterization 3. Characterization of Complex Wastewater Using High-Throughput Techniques 4. Bacterial Bioflocculant as Bioengineers in Wastewater Treatment 5. Application of Bacterial Bioflocculant for the Synthesis of Biocapped Metal Nanoparticles and their Multifunctional Features 6. Implications of Bacterial Bioflocculant for Public Health Demands 7. Summary