Determination of fluoride in and around Visakhapatnam city, Andhra Pradesh.

Physico – Chemical analysis of well and bore well water samples was carried out from ten sampling stations of Visakhapatnam District for a period of 1 year during different seasons in 2009. The analysis of different parameters namely- temperature, pH, color, electrical conductivity and fluoride were carried out as per standard methods. All the parameters studied were within the permissible levels except fluoride. The results indicate that fluoride content in some sampling stations ( S2 ,S7 , S14, S15 and S16) was found above standards probably due to seasonal variations and salt water contamination.