Past Issue | Volume | Volume 4,Issue 10,Oct,2018
Abstract:-
Mahendranathan C and Kishani G S & Department of Botany, Eastern University, Sri Lanka
Abstract:-
This study was aimed to determine the physiochemical and microbial quality of bottled water, available in Batticaloa district, Sri Lanka. Twenty bottled water samples, sold in the local markets in this district, were collected. All the samples showed the aerobic bacterial counts and the concentration of the total Coliforms within the limits of World Health Organization (WHO) standards. Whereas, the pH, fifteen brands of bottled water were below the limit, recommended by the WHO (6.5 - 8.5), and varied from 4.97 - 6.40. The total hardness was from 0.4 - 5.2 mg/l for three brands, out of 20 different brands of bottled water, tested. The permissible level of total hardness by WHO is 250 mg/l. The chloride values vary from 1.06 - 1.9 mg/l for five brands, whereas the acceptable level of chloride by WHO is 250 mg/l, which shows the concentrations of minerals were lower than the recommended level by WHO. However, colour, electric conductivity, turbidity, nitrate, fluoride, phosphate, total hardness, iron, coliform, aerobic bacterial counts, total dissolved solids, chemical oxygen demand, dissolved oxygen and sodium and the potassium level were within the limits of Sri Lankan Standard (SLS) and WHO. The results show that the microbial quality of the bottled water brands, available in the study area, comply with the WHO and Sri Lankan standard
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