Correlation coefficient.

ABSTRACTThe impact of drinking water quality at different locations of Ramapuram, near Tirupati, India has been assessed to study its effects on human health. Water samples were collected from different locations and analyzed for physicochemical parameters such as pH, hardness, alkalinity, calcium, magnesium, iron, nitrates, chlorides, sulphates, electrical conductivity, total solids (TS), total dissolved solids (TDS), total suspended solids (TSS), dissolved oxygen (DO), chemical oxygen demand (COD) and bio chemical oxygen demand (BOD). The results were compared with the World Health Organization (WHO) water quality standards. Correlation studies reveal that drinking water of some of the areas was not suitable for drinking purpose and needs purification before drinking. Keywords: Water quality, Human health, BOD, TSS, TDS, Correlation coefficient.