Physico-Chemical Properties and Correlation Co-Efficient of River Ganga at Allahabad

This paper is an attempt to analyse the water quality of river Ganga in Allahabad district. Water samples were collected from RasoolabadGhat to ChatnaagGhat from five sampling sites in the year 2012-2013. Ten water quality parameters for all the sites were estimated by adopting the standard methods and procedures.The results revealed that the average pH value was measured as 8.07±0.44 mg/L, Electrical Conductivity was 188.49±63.00 μmho-cm-1, Dissolved Oxygen was 6.47±0.82 mg/L,Biochemical Oxygen Demand was 9.41±1.41 mg/L, Chemical Oxygen Demand was 15.28±3.07 mg/L,Total Hardness was 118.56 ±40.91 mg/L,Total Alkalinity was 168.46±12.50mg/L, Chloride was 27.49±16.97 mg/L and Total Dissolved Solids was 216.83±13.84mg/L. Comparison of estimated values with WHO and USPHS standards revealed that water of study area is polluted which may be harmful for aquatic bio-system and human beings.So water quality management is urgently required to achieve the water quality standards determined by WHO and USPHS. Correlation coefficient showed highly significant positive and negative relationship (p<0.05 level).