Assessment of fluoride toxicity and dental fluorosis in Sahlawas block of distt Jhajjar, Haryana

Ground water samples collected from 40 villages of Sahlawas Block of District Jhajjar, Haryana were analysed for the fluoride and other chemical characteristics. A total number of 160 samples were collected from hand pumps, tube well, well and Govt. supply water of different villages. It is observed that 32. 67% samples of ground water contain fluoride upto 1.0 mg/L, 26% are within 1.5 mg/L and 41.33% are above 1.5 mg/L. Consumption of excessive fluoride in drinking water causes dental fluorosis and physiological deformities. An attempt was also made to survey the school children for dental fluorosis. Both prevalence and severity of dental fluorosis were found to be increased with increasing of fluoride concentration. A systematic calculation of the correlation coefficients has also been carried out between different physico-chemical parameters.