Ecology, Environment and Conservation Paper

Vol 24, Issue 1 2018; Page No.(396-401)

SEASONAL WATER QUALITY INDEXING (WQI) ON SURFACE STORAGE AND SUBTERRANEAN DISPERSION AT UKKADAM PERIYAKULAM TANK IN COIMBATORE CITY

S. Ragunath and M. Leninsundar

Abstract

Water quality Indexing helps understand the impulse-response patterns of the water quality parametric changes in relation to the interconnectivity of rainfall-storage-dispersion at any multipurpose tank site. The pre-monsoon, monsoon and the post monsoon fluctuations in the values of water quality index parameters were analyzed in accordance with standard operating procedures.On an invariably uniform gradation range of 1 to 5 weightage, the mean water quality indices were found to be 2.25 to 2.64 for surface water and 2.06 to 2.17 for the ground water, spanning over the seasons. The overall hazard rating could be categorized under medium to high vulnerabilities. By these quality standards, perspective planning to improve upon the water quality in storage as well as under dispersion is to be devised. The prospects of insitu treatments to control the contamination levels are to be explored through the strategic prospects for dilution by rainwater harvesting and the usage of appropriate filtration system to improvise upon physicchemical water quality criteria. Eventually, the ecological buffering has been suggested around the tank system to keep off such maladies as eutrophication and deoxegenation resulting from point source and distributed pollution along the contributing system connecting the tank.

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