You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Fluoride level in water shouldbe ____ mEq/L - and explain in detail?
Fluorine is the most abundant element in nature. Fluorine is essential for the normal mineralisation of bones and formation of dental enamel. Recommended level of fluoride in drinking water is 0.5 to 0.8 mg per litre. Excessive levels of fluorine results in dental fluorosis, skeletal fluorines, genu valgum. Recommended upper limit is 1.5mg/L. Park's Textbook of Preventive and Social Medicine, 25th edition, Page No. 682, 783