The microbial and physicochemical quality of the storage tanks and distribution networks of drinking water in the villages of Saqqez in Kurdistan province, Iran (2018)

Document Type: Original Article

Authors

Department of Microbiology, Faculty of Basic Sciences, Islamic Azad University Bonab, Bonab, Iran

Abstract

Lack of access to safe drinking water is an important health concern in developing countries. The present study aimed to investigate the microbial and physicochemical quality of the drinking water storage tanks and distribution networks in the villages of Saqqez in Kurdistan province, Iran in the summer of 2018. This descriptive, cross-sectional study was conducted by sample collection from the storage tanks and distribution networks in 20 villages covered by Saqqez Rural Water and Wastewater Company during three months. Chemical tests were performed based on titration, and physical tests were carried out using instrumental methods. The culture of the specimens was performed to determine the total and fecal coliforms using the most probable number (MPN method. Data were analyzed in SPSS and Excel software. In 100% of the storage tank samples, total and thermophilic coliforms were within the national and international standards. In the distribution networks, 11.67% and 33.3% of the samples had higher total and thermophilic coliforms than these standards, respectively. The residual chlorine parameter was higher than the national standards in 15% of the storage tank samples and 25.03% of the distribution network samples. Turbidity, total hardness, chloride, electrical conductivity, pH, and TDS in the storage tanks and distribution networks were in accordance with the national and international standards. All the physical and chemical parameters (except for chlorine residues) were within the national and international standards, and the maximum total and fecal coliforms were six MPN, which could be maintained in the standard range via chlorination.

Keywords


  1. Shokoohi R, Dargahi A, Ahmadidoost G, Moradi MJ. Removal of phenol from aqueous solutions using persulfate-assisted, photocatalytic-activated aluminum oxide nanoparticles. J Adv Environ Health Res 2019; 7(4):203-12.
  2. Pirsaheb M, Zinatizadeh AK, Dargahi A. Performance evaluation of coagulation process in removal of low turbidity and color from water using different inorganic coagulants. J water & wastewater 2011; 23(81):111-118.
  3. Kumar D, Malik S, Madan M, Pandey A, Asthana AK. Bacteriological analysis of drinking water by MPN method in a tertiary care hospital and adjoining area Western UP, India. J Environ Sci Toxicol Food Technol;4(3):17-22.
  4. Barakat A, Meddah R, Afdali M, Touhami F. Physicochemical and microbial assessment of spring water quality for drinking supply in Piedmont of Béni-Mellal Atlas (Morocco). Phys Chem Earth Parts A/B/C 2018; 104:39-46.
  5. Bumadian MM, Almansury HH, Bozakouk IH, Lawgali YF, Bleiblo FA. Detection and Enumeration of Coliform Bacteria in Drinking Water at Hospital of Benghazi/Libya. J Exp Biol 2013; 1(6): 437-440.
  6. Van der Hoven C, Ubomba-Jaswa E, Van der Merwe B, Loubser M, Abia AL. The impact of various land uses on the microbial and physicochemical quality of surface water bodies in developing countries: Prioritisation of water resources management areas. Environ Nanotechnol Monit Manage 2017; 8:280-9.
  7. Derfoufi H, Legssyer M, Legssyer B. Effect of physicochemical and microbiological parameters on the water quality of wadi Zegzel. Mater Today: Proceedings 2019;13(30):730-738.
  8. Gopalakrishnan S, Gowda CL, Reddy MP, Rao GR, Humayun P, Srinivas V, et al. Ensuring biological safety of drinking water at international crops research institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Andhra Pradesh, India. Afr J Biotechnol 2012; 11(67):13115-8.
  9. Norozi R, Zafarzade A, Yolizade T. Survey on microbial quality of drinking water in city Maravehtapeh Villages and comparison with national and WHO standards. J Environ Health Eng 2013; 1(1):20-9.
  10. Soltanian M, Dargahi A, Asadi F, Ivani A, Setareh P. Variation of PhysicoChemical Quality of Groundwater Watershed in Gharehsou during 2003-2012. J Mazandaran Univ Med Sci 2015; 24(121):275-87.
  11. Platikanov S, Baquero D, González S, Martín-Alonso J, Paraira M, Cortina JL, et al. Chemometric analysis for river water quality assessment at the intake of drinking water treatment plants. Sci Total Environ 2019; 667:552-62.
  12. Atafar Z, Almasi A, Sarkhosh M, Dargahi A. Microbiological Quality Trend of Drinking Water in Rural Areas of Kermanshah during 2004-2013. J Environ Health Eng 2015; 3(1):10-19.
  13. Mohammadian Fazli M, Tohidloo Z, Hosseinloo M. Study on microbiological quality of rural and urban drinking water in distribution systems of Ijroud, Zanjan in 2013-2015. J Hum Environ Health Promot 2017; 3 (1) :47-53.
  14. Almasi A, Dargahi A, Ahagh M, Janjani H, Mohammadi M, Tabandeh L. Efficiency of a constructed wetland in controlling organic pollutants, nitrogen, and heavy metals from sewage. Journal of chemical and pharmaceutical sciences 2016; 9(4):2924-8.
  15. APHA. AWWA. WEF. Standard Methods for the Examination of Water and Wastewater. 20th Ed. Washington APHA. 1998, 208- 291.
  16. Rompré A, Servais P, Baudart J, De-Roubin MR, Laurent P. Detection and enumeration of coliforms in drinking water: current methods and emerging approaches. Journal of microbiological methods 2002; 49(1):31-54.
  17. Majdi H, Gheibi L, Soltani T. Evaluation of physicochemical and microbial quality of drinking water of villages in Takab Town in West Azerbaijan in 2013. J Rafsanjan Univ Med Sci 2015; 14 (8) :631-642
  18. Shabankareh fard E, Hayati R, Dobaradaran S. Evaluation of physical, chemical and microbial quality of distribution network drinking water in Bushehr, Iran. Iran South Med J 2015; 17(1-2): 1223-1235
  19. Robat Sarpoushi G, Choupani R, Tarkhasi M, Rahmani Sani A. Evaluation of drinking water biological and chemical quality in rural villages under vision of Rabat Sarpush and Shamkan Villages of Sabzevar City. Beyhagh 2012; 17(1): 13-17.
  20. Habuda-Stanić M, Santo V, Sikora M, Benkotić S. Microbiological quality of drinking water in public and municipal drinking water supply systems in Osijek-Baranja County, Croatia. Croat J Food Sci Technol 2013; 5(2):61-9.
  21. Hoxha E, Hamzaraj E. Assessment of drinking water samples of different localities in fier district. Interdisplin J Res Dev 2017; 4(2): 39-44.
  22. Ahmad MR, Ahmad AF, Sharma HK. Assessment of microbiological quality of drinking water treated with chlorine in the Gwalior city of Madhya Pradesh, India. Afr J Environ Scie Technol 2015;9(5):396-401.