The Flouride Nilogon method has been developed by a group of researchers lead by Dr. R K Dutta in the Department of Chemical Sciences, Tezpur University. Flouride Nilogon removes the excess flouride retaining only a small amount of flouride (0.7 ppm) require for a good health. The treatment water doess not contain any residual chemical added from outside. Its pH is about 7.5 which is very safe for drinking. However, the treated water should be consumed only after boiling.