1. Overview of Advances in Water Purification Techniques 2. Global Water Challenges and Solutions 3. Water Supply and Water Quality Challenges in Panama 4. Contaminants of Emerging Concern: Occurrence, Fate, and Remediation 5. Monitoring Water Contaminants With Ion Chromatography 6. Advanced Oxidation and Reduction Processes 7. Capacitive Deionization (CDI): An Alternative Cost-Efficient Desalination Technique 8. Remediation of Selenium in Water: A Review 9. Status of Arsenic Remediation in India 10. Addressing the Arsenic Issue in the Lower Mekong Region-The Challenges and Systematic Approaches 11. Development of Synthetic Hydroxyapatite-Based Household Defluoridation Unit 12. Addressing Groundwater Fluoride Contamination Using Inexpensively Processed Bauxite 13. Transforming the Global Arsenic and Fluoride Crisis Into an Economic Enterprise: Role of Hybrid Anion Exchange Nanotechnology (HAIX-Nano) in Ballia, Uttar Pradesh and Nalhati, West Bengal 14. Green and Sustainable Pathways for Wastewater Purification 15. Water Purification: Treatment of Microbial Contamination 16. Taking Good Ideas to Great Products: Building Bridges Across the Technology Readiness Valley for Water Purification Technologies in Singapore