Pollution monitoring of coastal and estuarine areas: Ⅰ. Bacterial indicators along the south Gujarat coast

摘要

A study was undertaken to assess the validity of enteric and supplemental bacterial indicators along the 115-km length of the south Gujarat region (India). Enteric organisms like Proteus and Klebsiella, Escherichia coli, Salmonella and Shigella were detected in 74, 25, 4 and 2% respectively of the 47 samples. Supplemental indicators such as Vibrio parahaemolyticus and Vibrio cholerae like organisms were retrieved in 8 and 4% of samples whereas Pseudomonas aeruginosa like organisms could not be detected. Total coliforms and total vibrios were retrieved in 27 and 55% of the samples. The validity of these bacterial groups as water quality indicators is discussed with statistical relations. It is suggested that inclusion of these groups could be made mandatory in coastal and estuarine waters for the environmental impact assessment.