Summary of Abstract Submission

Abstract Submission No. IO50-03-0041PresentationPoster

EVALUATION OF SURFACE WATER QUALITY AND ENVIRONMENTAL FACTORS ASSOCIATED WITH FAECAL INDICATOR ORGANISMS AT NORTH WEST COAST OF INDIA

Abhay B. Fulke*1, Edna D┐souza1, Aayushi Maloo1, Anirudh Ram1, Najmuddin Mulani 1, Divya Majithiya1

1 CSIR- National Institute of Oceanography (NIO), RC,Mumbai, India

ABSTRACT :

Marine ecosystem is being threatened by the discharge of untreated sewage waste and industrial effluents which affects the sustainability of living resources and public health. The present study was aimed to determine the water quality status prevailing along the North-west coast of India by monitoring temporal and spatial variation in physicochemical parameters and level of faecal indicator organism (FIOs); (namely total coliforms, faecal coliforms, Escherichia coli and Streptococcus fecalis) along the five designated coastal water sites ┐ Veraval, Hazira, Mumbai, Ratnagiri and Malvan for the period of three years (2012-14). The levels of faecal coliforms had distinct patterns, peaking at wet season (≤14523 CFU/100ml) and diminishing during dry seasons-Pre-monsoon (≤ 5900 CFU /100ml) and Post-Monsoon and (≤9366 CFU/100ml) respectively; which exhibits unreliable compliance with the imperative CPCB standards (FC≤ 100CFU/100ml). Based on the similarity of water quality characteristics applied by hierarchical cluster analysis (HCA), these sites were grouped into three categories: relatively less polluted (LP), moderately polluted (MP) and highly polluted (HP). Higher concentration was observed at shoreline points and decreased at offshore points which was confirmed by correlation matrix at p<0.05 significance level. Thus, regular trends of coastal FIOs variability and collective information about water quality and environmental factors may be useful for monitoring and management to reduce such FIO encumber at coastal region.