IJESD 2014 Vol.5(3): 303-308 ISSN: 2010-0264
A Preliminary Assessment of the Occurrence of Cryptosporidium and Giardia in the School Swimming Pool Water in Dubai, United Arab Emirates
Alia Ali Ahmad Aljanahi and Munawwar Ali Khan
Abstract—The aim of this study was to assess the presence of Cryptosporidium and Giardia in the water of school swimming pools located in Dubai, UAE . The swimming pool water samples from five schools were tested for Cryptosporidium oocysts and Giardia cysts using direct immunofluorescence assay. Sa mples were also examined for the total coliform, fecal coliform and heterotrophic bacteria using the membrane filtration technique. The majority of the tested swimming pool water samples were found contaminated with either Cryptosporidium oocysts or Giardia cysts or both. Cryptosporidium oocysts were found to be in the higher range (1-15 oocysts per liter) than that of Giardia cysts (1-4 cysts per liter). All of the swimming pool water samples were found negati ve for the presence of traditional bacterial indicators. Howe ver , direct DAPI staining detected several types of viable but nonculturable (VBNC) bacteria on the membrane filter. In conclusion, based on the preliminary data obtained, Cryptosporidium and Giardia were found to be present in the tested schools’ swimming pool water. Future work on a long term monitoring of both parasites is highly recommended to enhance the swimming pool water quality and ensure the public health safety which will help in maintaining a hygienic and healthy recreational water environment.
Index Terms—Cryptosporidium, giardia, swimming pool.
Alia Ali Ahmad AlJanahi was with the Department of Natural Science & Public Health, Zayed University, Dubai, UAE. She is now with the Department of Safety &Environment, DP World, Jebel Ali, UAE (e-mail: firstname.lastname@example.org).
Munawwar Ali Khan is with the Department of Natural Science and Public Health, College of Sustainability Sciences and Humanities, Zayed University, Dubai, P. O. Box: 19282, UAE (e-mail: Munawwar.Khan@ zu.ac.ae).
Cite:Alia Ali Ahmad Aljanahi and Munawwar Ali Khan, "A Preliminary Assessment of the Occurrence of Cryptosporidium and Giardia in the School Swimming Pool Water in Dubai, United Arab Emirates," International Journal of Environmental Science and Development vol. 5, no. 3, pp. 303-308, 2014.