A comprehensive study on distribution pattern of pH, arsenic, fluoride, and iron in groundwater samples collected around the six selected tea gardens of Lakhimpur district, Assam has been presented in this paper. Forty eight groundwater samples were collected from tubewells and ringwells during June, 2012 to November, 2012 at different sites around six tea gardens of Lakhimpur district were analysed for pH, arsenic, fluoride, and iron by following standard procedure. The present study has shown that naturally occurring arsenic and iron in groundwater is more widespread in the study area than is generally recognized. The concentrations of fluoride in the groundwater of the area are within the guideline values of WHO. Statistical observations indicate that the distribution of various water quality parameters in the study area is widely off normal.
