The purpose of this investigation was to assess exposure to drinking water fluoride and to evaluate the risk of dental fluorosis among the Harappanahalli population. The study covered all 20 areas in Harappanahalli and 80% of population that has access to public water supplies.

Physico-chemical and biological monitoring of groundwater samples of various wells situated near Rajaula village, Chitrakoot (Satna) Madhya Pradesh was carried out.

In the present study, analysis of groundwater of BHEL industrial area of Bhopal has been done in winter, summer and monsoon season for one year (2007-08) at different sampling stations selected for this study. Two readings of sample has been observed and analysed to check the water quality index (WQI).

Increased incidences of groundwater nitrate and its impact on human health especially in infants as blue baby disease, has initiated to determine groundwater nitrate concentration in Chandrapur city of Maharashtra state. Groundwater sampling was carried out at 18 locations from dug wells and bore wells from the study area.

Hydrochemistry in parts of the Lower Tista Floodplain in northwest Bangladesh is dominated by alkalies and weakly acid, having highest concentration of sodium cations and bicarbonate anions respectively. Groundwater is characterized by sodium-calcium and sodium-potassium cation and bicarbonate-chloride-sulphate anion facies, and genetically ‘normal chloride’, ‘normal sulphate’, and ‘normal carbonated’ type, and soft to saline.