Determination of microbial and chemical contamination of potable water served in the passenger bus (a case study in Soffeh terminal, Isfahan)
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Background
Nowadays, Interurban Buses play an important role in passengers transfer between the cities. Contaminated drinking water in Buses may threaten the health of travelers. This study investigated the microbial and chemical quality of drinking water supplied in the coaches transporting the passengers from/to Soffeh terminal in Isfahan.
Methods
In this study, 60 samples of potable water supplied in the coaches were randomly collected. Bacterial contamination of the samples was examined using multiple tube method, (MPN). Chemical parameters including EC, TDS, total hardness, chlorine, turbidity, pH and temperature were measured according to the standard methods. Data were analyzed using SPSS version 23.
Findings: The results showed that total coliform and fecal coliform were positive in 20% and 7% of the samples, respectively and so that all contamination was related to Water Dispenser. About 35% of the samples had EC levels more than the recommended standard (500 µmhos/cm2). The turbidity value in 11.6% of the samples was higher than 1 NTU and the residual chlorine in 98.3% of the samples was zero.
Conclusion
This study showed that most of potable water served to the passengers via chillers installed in the coaches was polluted to the fecal coliforms. Whereas, the pollution was not observed in the bottled potable water available inside the coaches. Thus, collection of the tap equipped-chillers and supplying only bottled potable water in all the coaches can prevent the passengers from intestinal diseases.
Language:
Persian
Published:
Journal of Health System Research, Volume:13 Issue: 3, 2017
Pages:
317 to 321
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