Investigation of Microbial Contamination of the Mahabad Dam Reservoir in Different Seasons

محورهای موضوعی :

Mohammad Hossein Sadeghi Zali ¹

1 - Department of Microbiology, Faculty of Veterinary Medicine, Islamic Azad University, Urmia Branch, Urmia, Iran

تاریخ دریافت : 1401/06/14 تاریخ پذیرش : 1401/09/22 تاریخ انتشار : 1402/12/11

کلید واژه: seasons, Fecal coliforms, Mahabad dam reservoir, Total coliforms, Fecal Streptococci,

چکیده مقاله :

Mahabad dam was constructed to supply drinking water, irrigation, and electricity generation on the Mahabad river located West Azerbaijan, Mahabad. In this research, bacterial contamination of the water of mahabad dam was investigated. According to the geographical properties of the reservoir, 3 stations (near the dam crest, Koter branch, and Bitas branch) were selected and samples were taken via Rottner from different depths of the reservoir during 12 months. Bacterial contamination (Total Coliforms, Fecal Coliforms, and Fecal Streptococci) were studied after transferring the samples to laboratory. Results indicated that values of Total Coliforms, Fecal Coliforms, and Fecal Streptococci were varied between 2.33 ± 1.20 and 1166.67 ± 33.33, 0.0 and 30.33 ± 6.74 and 0.0 ± 16.67 ± 6.33 MPN/100 ml respectively during over all the year. These values were in the allowed range according to the drinking water and recreation standards of Iran.

منابع و مأخذ:

1. Ademoroti C.M.A., 1996. Environmental Chemistry and Toxicology. Foludex Press Ltd., Ibadan. 22-23.


2. Packham R.F., 1996. “Drinking Water Quality and Health,” In: RM. Harrison, Ed., Pollution, Causes, Effects and Control, 3rd Edition, The Royal Society of Chemistry, London, 52-65.


3. Baig S.A., Mahmood Q., Nawab B., Hussain A., Nafees M., 2010. Assessment of Seasonal Variation in Surface Water Quality of Chitral River, North West Frontier Pro vince,(NWFP), Pakistan. World Applied Science Journal. 9(6), 674-680.


4. Irenosen O.G., Festus A.A., Coolborn A.F., 2012. Water Quality Assessment of the Owena Multi-Purpose Dam, Ondo State, Southwestern Nigeria. Journal of Environmental Protection. 3, 14-25.


5. National Water and Wastewater Engineer Company. 2016. Ranking the World’s Most Water-Stressed Countries in 2040. 4(2), 1-76


6. Marvizadeh M.M., Mohammadi Nafchi. A., Jokar, M., 2014. Preparation and Characterization of Novel Bionanocomposite Based on Tapioca Starch/Gelatin/Nanorod-rich ZnO: Towards Finding Antimicrobial Coating for Nuts. Journal of nuts. 5(2), 39-47


7. Chavoshi N., Marvizadeh M.M., Fallah N., Rezaei-savadkouhi N., Mohammadi Nafchi A., 2022. Application of Novel Nano-biopackaging Based on Cassava Starch/Bovine Gelatin/Titanium oxide nanoparticle/Fennel Essential Oil to Improve Quality of the Raw Fresh Pistachio. Journal of Nuts. [In press]


8. Fallah N., Marvizadeh M.M., Jahangiri R., Zeinalzadeh A., Mohammadi Nafchi A. 2022. High-Barrier and Light–protective Bionanocomposite Film Based on Rye Starch/nanorod-ZnO for Food Packaging Applications. Journal of Chemical Health Risks. [In press].

9. Ministry of Energy. 2009. Instruction of dam lake monitoring. NO. 330: 151p.


10. Darya Tarsim Consulting Engineer Company. 2007. Report of Mahabad dam Hydrography, Mapping and sedimentology. Regional Water Company of West Azarbayjan.


11. Meteorological Organization of West Azarbayjan. 2013. Mahabad weather data.


12. APHA, 2005. Standard methods for the examination of water and wastewater. American publication Health Association, Washington DC, USA. 1113p.


13. Cohen J. Shuval H.I., 1973. Coliforms, fecal coliforms and fecal streptococci as indicators of water pollution. Journal of Applied and Environmental Microbiology. 2(1), 85-95.


14. Deputy for Strategic Supervision. 2010. Environmental Criteria of Treated Waste Water and Return Flow Reuse. Ministry of Energy. NO. 535: 155p.


15. Ouattara N.K., Passerat J., Servais P., 2011. Faecal contamination of water and sediment in the rivers of the Scheldt drainage network. Environmental monitoring and assessment. 183(1), 243-257.


16. Mahmoodi M.M., Javanmardi. F., 2009. Determination of the amount and origin of the fecal bacteria in Parishan lake. Iranian Journal of biology. 22(4), 711-718.


17. Ehrampush M.H., Mehrjerdi A.Z., Ghaneian M.T., Mehrizi E.A., Saghi M.H., 2015. Qualitative assessment of Bojnurd main water supplyby using water quality indices in:Case studyof Shirin Dareh reservoir dam. Journal of North Khorasan University. 7(3), 475-484.