Groundwater assessment of Narayanganj city of Bangladesh
M.I.I. Rabbi1*, P.M. Toma2
Physicochemical quality of the groundwater in Narayanganj region was investigated.
Majority of the samples contain high concentrations of iron and hardness.
It was found that about 75% of samples have odor.
Many tube-wells have turbid water.
The groundwater in the studied area is not appropriate for drinking and household use.
Groundwater uses have escalated dramatically in Bangladesh over the past three decades, particularly for farming purposes, as large parts of the country have little access to surface water supplies. In the Narayanganj region, around 90% of the inhabitants use groundwater for drinking and household purposes. However, the majority of diseases in developing countries are caused by drinking contaminated water. Therefore, groundwater quality analysis and assessment are of utmost importance. In this study, the physicochemical quality of the groundwater supplied to Bangladesh’s Narayanganj region was investigated. A total of 25 samples were collected from different tube-wells of 12 wards among 27 wards for analysis purposes. To assess the physical and chemical contaminated content, various standard laboratory tests were performed and assimilated with WHO and BDS. Six physiochemical parameters namely pH, iron, hardness, turbidity, odor, and color were tested. By appraising the study, it was clear that the majority of the samples contain high concentrations of iron and hardness, and these samples deviated significantly from WHO and BDS standards. In terms of the odor, it was found that about 75% of samples have odor. pH of all samples dropped below the permissible limits. Many tube-wells have turbid water. Excess turbidity poses a risk to health and offers protection to pathogenic microorganisms. In the case of a few samples, the concentrations of hardness and conductivity are high too. The higher iron content can occur because of geological aquifer formation. Considering the higher concentration of these chosen parameters, the groundwater in the studied area is not appropriate for drinking and household use.