Suitability Analysis of Ground and Tank Water Quality for Domestic Purpose along Downstream Side of Coimbatore City Ragunath S*, Lenin Sundar M** *Department of Civil Engineering, KPR Institute of Engineering and Technology, Coimbatore, India. sragunathragu@gmail.com **Department of Civil Engineering, Sri Krishna College of Technology, Coimbatore, India Online published on 23 March, 2017. Abstract The tribulations of water quality have grow to be more significant than the quantity, as the environmental harms are receiving more severe in diverse parts of our planet. The supervision of the groundwater supply is a tough job globally next to the surroundings of the increasing water demand for living and non living things. This research work is linked together water qualit and quantity, which is flattering more severe owing to populace detonation, rising in farming and enhanced standard of living. This study aims to estimate the category of surface water and groundwater quality. Also to examine the interface of surface water and groundwater which is decisive in categorize to identify the special effects of best management practices on the complete scheme of water resources. For this study, four downstream tanks such as selvachindhamani, ukkadam big tank, valankulam, singanallur tankwere choicen from coimbatore city, considering these tanks were comparatively polluted due to manufacturing and municipal intervention. This study focused on ground water and surface water interactions using MODFLOWat large exclusively as a groundwater-flow simulation model. MT3D package from Visual MODFLOW was used to simulate the contaminant transport due to advection and dispersion. Semi-structured interview was prepared in the study area after acquiring the water quality test results. In view with the response given by the public, Source for drinking water, method of waste disposal and spread of disease among the people were analyzed. 50% of the people living nearby to the tanks dispose the waste into the tank, which is the most important cause for water quality deterioration. Top Keywords MODFLOW, Best Management Practices, Environmental harms, Groundwater quality, MT3D. Top |