Assessment of water quality along the Mahim creek in Mumbai using water quality index method.

Abstract

The present investigation along the Mahim creek of Mumbai was performed for the study of water quality parameters like pH, dissolved oxygen, biochemical oxygen demand and fecal coliform using water quality index for the evaluation of the deterioration level. The study was carried for one year period during October 2016 to September 2017. Samples were collected from three stations viz. Mahim-Bandra Pipe Line, Bandra-Sion Link Road and Bandra-Kurla Complex along the creek. National Sanitation Foundation's Water Quality Index (NSFWQI) method followed with modified relative weights assigned by Central Pollution Control Board using unique score value that state the level of deterioration. Study reveals that the Mahim creek water quality was bad to very bad throughout the year indicating in appropriate for propagation of aquatic life and commercial fisheries mentioned in Seawater II. It could be due to domestic waste and industrial effluents released indiscrimenately that has severely deteriorated the quality of creek water. Present investigation suggests that, effluents treatment is required to bring them into the biodegradable belt and make sure that local sewer limits are maintained. Also illegal encroachment, reclamation construction, dumping along the creek should stopped and mangrove plantation should be made along the creek to protect the aquatic ecosystem and mangrove forest.