HOJAI, Jan 6 : A preliminary survey on a random basis has led to a major finding of fluoride in groundwater sources used for drinking purposes in a vast belt of 91 villages under Hojai subdivision. The Public Health Engineering Division, Hojai, recently conducted a survey in some villages under 24 gaon panchayats under Binnakandi Block and after preliminary test, found fluoride positive in deep groundwater in 19 gaon panchayats. The affected areas are Haldiati, Tapazjuri, Parakhowa, Nizparakhowa, Dimarumukh and Nilbagan under Jamunamukh constituency. Due to use of fluoride-mixed water a large...