Physico-chemical analysis of the bottled drinking water available in the Dhaka city of Bangladesh

Nowadays quality and suitability of water are of great concern because of various water borne disease and fatal unhealthy impacts on human health. such concern is one of the reasons of opening of bottled water in bangladesh. public belief that bottled water is free from germs and unhealthy entities. as bottled water is marketed by various companies,it is essential to check whether these waters are really safe for public health or not. convinced on it,the present study has investigated the physico-chemical properties of the bottled drinking water available in the dhaka city of bangladesh. the purpose of this study is to investigate the physico-chemical property of bottled drinking water currently available in dhaka city,bangladesh. six different branded water samples were collected from market for this purpose. the investigated parameters were mainly- ph,electrical conductivity (ec),total dissolve solid (tds),dissolve oxygen (do),and total hardness (th) accompanying with,chloride (cl-),nitrate (no3 -),sulphate (so4 2-),iron (fe2+),calcium (ca2+) and magnesium (mg2+) ions using standard analytical techniques available in the laboratory. it was observed that the concentration of like parameter is quite different from sample to sample. the parameter values found to be in the range of ph (6.11-6.83),ec (38.4-493.0 μs/cm),tds (25.0-295.80 mg/l),do (6.88-8.76 mg/l),th (1.5-228.0 mg/l),cl- (0.24-2.69 mg/l),no3 - (0.11-2.98 mg/l),so4 2- (0.04-110 mg/l),fe2+ (2.25-3.2 mg/l),ca2+ (4.90-17.01 mg/l) and mg2+ (0.25-7.27 mg/l. the findings are informing that except the ph,do and fe2+ values,all other parameter values are quite low and appeared within the world health organization (who) and bangladesh drinking water quality standard (bdwqs) limit. © 2017,university of mohammed premier oujda morocco.