1. Properties, source, health and environmental risk assessment of fluoride 2. Approaches and analytical methods for determination of fluoride in water 3. Conventional and advanced techniques for removal of fluoride from water 4. Adsorption: A cost-effective green technology for removal of fluoride from water 5. Adsorbents for removal of fluoride from water 6. Techno-economic assessment of de-fluoridation of water 7. Global water challenges and future perspectives