A Survey on coliform contamination and chemical parameters of potable water from water dispensers in faculties of Mashhad University of Medical Sciences
-
Arezoo Ghorbanzadeh
,
Leila Peivasteh roudsari
,
Najmeh Afshar Kohan
,
Reihaneh Zangi
,
Fatemeh Moradi
Abstract
Water is of great significance for living and access to safe water has been considered as an important goal in public health. However, water can transmit a wide range of pathogenic microorganisms. The aim of this study was to determine the bacteriological quality of drinking water dispensed by water coolers from different faculties of Mashhad University of Medical Sciences, on August 2016. A total of 22 samples from 9 water coolers of different faculties of Mashhad University of Medical Sciences were collected and some indicators of contamination including total coliform and fecal coliform, residual free chlorine and pH were evaluated. Results show that Coliform and Escherichia coli were not observed in any of the water samples. Residual chlorine content in drinking water in 50 percent of samples and pH in 12.5 percent of samples were out of Iranian standard levels range. There is no significant difference between the levels of pH and chlorine in water samples before and after water dispenser systems. The lack of coliform indicates the safety of drinking water from water coolers. However, the decrease in the residual free chlorine after water cooler may cause to grow some microorganisms in water coolers. Therefore, it is suggested that an appropriate and regular monitoring program should be established.
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11. Taheri E, Vahid Dastjerdi M, Hatamzadeh M, et al. Evaluation of the influence of conventional water coolers on drinking water quality. Iran J Health Environ 2010; 2: 268-75.
12. Naghipour D, Dodangeh F, Mehrabian F, et al. The Bacteriological Quality of Drinking Water of Water Coolers Located in Some hospitals in Rasht. Caspian J Health Res 2016; 2: 18-29.
13. Mohammadi S, Yazdanbakhsh A, Fattahzadeh M, et al. Investigating the bacteriological quality of water coolers drinking waters of educational departments of Shahid Beheshti Medical Sciences and Shahid Beheshti Universities in 1392. J Torbat Heydariyeh Uni Med Sci 2013; 1: 31-37.
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15. Dehghani M, Hashemi H, Hoseinpour M, et al. Assessment of microbiological quality of potable water distributed in buses of Karandish terminal. Health Sys Res 2014; 10: 306-14.
16. Valipoor A, Dinarlou K, Zare S. Bacterial Quality of Drinking Water in Bandarabbas Intercity Buses. Hormozgan Med J 2007; 8: 215-20.
17. Tavakoli H, Manafi M, Bayat M, et al. Rapid identification of the most important pathogenic microorganisms in water and food using Chromogenic Media Med Lab J 2008; 2: 59-67.
18. ISIRI. Microbial Properties of Drinking Water. Standard number 1011(4 th). 1997.
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20. Ranjbar Vakilabady D, Dobaradaran S, Tahmasebi R, et al. Bacterial Quality of Drinking Water in Bushehr
Intercity Buses in 2010. J Fasa Uni Med Sci. 2012; 2: 187-92.
21. Lévesque B, Simard P, Gauvin D, et al. Comparison of the microbiological quality of water coolers and that of municipal water systems. Appl Environ Microbiol 1994; 60: 1174-78.
22. Chamandoost S, Hassanzadazar H, Taghiloo S. Bacteriological Quality of Water Cooler Dispensers of Educational Settings in Zanjan University of Medical Sciences. J Human Environ Health Promot 2017; 2: 105-11.
23. Safari R, Yaghoubzadeh Z. Using Chromogenic Media for identification of coliform Bacteria and Escherichia coli. J Lab Res Vet 2012; 4: 134.
24. Tavakoli H, Sadr Momtaz M, Abedi Mohtaseb PT, et al. evaluation of chromogen media for detection of E. coli O157: H7 in food and water and comparison with the standard method. Iran J Med Microbiol 2012; 6: 68-76.
2. Sadeghi G, Mohammadian M, Nourani M, et al. Microbiological quality assessment of rural drinking water supplies in Iran. J Agric Soc Sci 2007; 3: 31-33.
3. WHO. Guidelines for drinking-water quality. WHO chronicle 2011; 38: 104-8.
4. Mokhtari S, Fazlzadeh Davil M, Dorraji B. Survey of bacteriological quality of the drinking water in rural areas of Ardabil city. J Health 2011; 2: 66-73.
5. Lehloesa N. Evaluation of the impact of household treatment procedures on the quality of groundwater supplies in the rural community of the Victoria district, Eastern Cape. Water SA 2000; 26: 285-90.
6. Tanwir F, Saboor A, Shan M. Water Contamination, health hazards and public awareness: a case of the urban Punjab, Pakistan. Int J Agric Biol 2003; 5: 560-62.
7. Mosaferi M, Shakerkhatibi M, Mehri A. Heterotrophic bacteria in drinking water in Tabriz, Iran. J School Public Health & Inst Public Health Res 2011; 8: 83-92.
8. Hoque BA, Hallman K, Levy J, et al. Rural drinking water at supply and household levels: Quality and management. Int J Hyg Environ Health 2006; 209: 451-60.
9. Baumgartner A, Grand M. Bacteriological quality of drinking water from dispensers (coolers) and possible control measures. J Food Prot 2006; 69: 3043-46.
10. Liguori G, Cavallotti I, Arnese A, Amiranda C, Anastasi D, Angelillo IF. Microbiological quality of drinking water from dispensers in Italy. BMC Microbiol 2010; 10: 1-5.
11. Taheri E, Vahid Dastjerdi M, Hatamzadeh M, et al. Evaluation of the influence of conventional water coolers on drinking water quality. Iran J Health Environ 2010; 2: 268-75.
12. Naghipour D, Dodangeh F, Mehrabian F, et al. The Bacteriological Quality of Drinking Water of Water Coolers Located in Some hospitals in Rasht. Caspian J Health Res 2016; 2: 18-29.
13. Mohammadi S, Yazdanbakhsh A, Fattahzadeh M, et al. Investigating the bacteriological quality of water coolers drinking waters of educational departments of Shahid Beheshti Medical Sciences and Shahid Beheshti Universities in 1392. J Torbat Heydariyeh Uni Med Sci 2013; 1: 31-37.
14. American Public Health Association, American Water Works Association and Water Pollution Control Federation. Standard Methods for the Examination of Water and Wastewater.21st Ed. APHA-AWWA-WPCF. 2005;Washington DC.
15. Dehghani M, Hashemi H, Hoseinpour M, et al. Assessment of microbiological quality of potable water distributed in buses of Karandish terminal. Health Sys Res 2014; 10: 306-14.
16. Valipoor A, Dinarlou K, Zare S. Bacterial Quality of Drinking Water in Bandarabbas Intercity Buses. Hormozgan Med J 2007; 8: 215-20.
17. Tavakoli H, Manafi M, Bayat M, et al. Rapid identification of the most important pathogenic microorganisms in water and food using Chromogenic Media Med Lab J 2008; 2: 59-67.
18. ISIRI. Microbial Properties of Drinking Water. Standard number 1011(4 th). 1997.
19. ISIRI. Physical and Chemical Properties of Drinking Water. Standard number 1053(5 th). 1997.
20. Ranjbar Vakilabady D, Dobaradaran S, Tahmasebi R, et al. Bacterial Quality of Drinking Water in Bushehr
Intercity Buses in 2010. J Fasa Uni Med Sci. 2012; 2: 187-92.
21. Lévesque B, Simard P, Gauvin D, et al. Comparison of the microbiological quality of water coolers and that of municipal water systems. Appl Environ Microbiol 1994; 60: 1174-78.
22. Chamandoost S, Hassanzadazar H, Taghiloo S. Bacteriological Quality of Water Cooler Dispensers of Educational Settings in Zanjan University of Medical Sciences. J Human Environ Health Promot 2017; 2: 105-11.
23. Safari R, Yaghoubzadeh Z. Using Chromogenic Media for identification of coliform Bacteria and Escherichia coli. J Lab Res Vet 2012; 4: 134.
24. Tavakoli H, Sadr Momtaz M, Abedi Mohtaseb PT, et al. evaluation of chromogen media for detection of E. coli O157: H7 in food and water and comparison with the standard method. Iran J Med Microbiol 2012; 6: 68-76.
| Files | ||
| Issue | Vol 4 No 3/4 (2018): Summer/Autumn | |
| Section | Original Article(s) | |
| Keywords | ||
| Drinking Water; Water Cooler; Total coliform; Fecal coliform; Residual free chlorine; pH | ||
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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
How to Cite
1.
Ghorbanzadeh A, Peivasteh roudsari L, Afshar Kohan N, Zangi R, Moradi F. A Survey on coliform contamination and chemical parameters of potable water from water dispensers in faculties of Mashhad University of Medical Sciences. J Food Safe & Hyg. 2019;4(3/4).
