Now-a-days serious research works are going on for the identification of fluoride endemic areas and assessment of fluoride exposure in different parts of the Asian and African continents. The prevalence of fluorosis is mainly due to the consumption of fluoride through drinking water. It is, therefore, necessary to find out the fluoride endemic areas to adopt remedial measures to the people on the risk of fluorosis. It is necessary to study groundwater quality, fluoride level and prevalence of fluorosis in human, fish as well as in cattle population. It is including investigation of acute toxicity (median lethal concentration) in fish. This book would be an invaluable asset to graduate and post graduate students, professionals, medical student, dentist, and researchers in the field of environmental science, environmental chemistry, chemistry, zoology, life science, microbiology, biotechnology, dentistry and health and medicine.