Assessment of groundwater quality in thanjavur district tamil nadu, india using gis platform

In order to assess the groundwater quality, 100 groundwater samples have been collected in year 2010. The water samples collected in the field were analyzed for electrical conductivity, pH, total dissolved solids (TDS), major cations like calcium, magnesium, sodium, potassium, and anions like bicarbonate, carbonate, chloride, nitrate, and sulfate, in the laboratory using the standard methods given by the American Public Health Association. The results were evaluated in accordance with the drinking water quality standards given by the World Health Organization (WHO 1993). To know the distribution pattern of the concentration of different elements and to demarcate the higher concentration zones, the spatial distributin maps for various elements were also generated, discussed, and presented.