Comparative Analysis of Water Quality of Bore-Hole and Open Well in Olpad Region, Surat, Gujarat

Abstract

Groundwater is generally considered a safe source of drinking water because it is abstracted with low
microbial load with little need for treatment before drinking. However, groundwater resources are commonly vulnerable
to pollution, which may degrade their Quality. This study focused upon the determination of physical, chemical and
biological properties, including metals, selected anions and coliform bacteria in drinking water samples from bore holes
& open wells in the Olpad region, Surat city. The purpose was to assess the quality of water from these sources. Water
samples were taken from two Bore holes & two Open wells i.e. four location were selected and samples were collected 4
times during the year 2015-16 and tested for physical, chemical & biological parameters like pH, Total Dissolved
Solids(TDS), Turbidity, Total Hardness, Calcium, Magnesium, Chloride, Flouride, MPN of Total Coliform, MPN of
Faecal Coliform, Free Residual Chlorine, etc. The results were compared with the World Health Organisation (WHO)’s
permissible limits and analysis was carried out. The results showed that in both the open well stations, value of Total
Coliform was higher. One selected bore hole had TDS, Nitrate, Flouride and Total Alkalinity value higher than WHO’s
limits while all the parameters of other bore hole were within the WHO’s permissible limits. Suitable measures should be
suggested for improving the quality of the water for drinking purpose.