Background: Water is a valuable resource in Saudi Arabia. There are untreated wells scattered throughout villages that are sources of drinking water for some rural residents.
Objectives: The present study was conducted to assess the quality of bottled and tap water as well as water from wells in the rural areas of Riyadh, Saudi Arabia.
Material and Methods: Water samples (n = 300) were randomly collected from bottles, taps, and wells. Bacteriological examination of samples included total and fecal coliforms. Screening was performed using wet mounts, trichrome stain, and a modified Ziehl-Neelsen technique. Total dissolved salts (TDS) were determined using a conductivity meter.
Results: There were no coliforms in samples taken from bottled water, whereas, they were detected in samples taken from tap and well water with percentages of 11%, 30% respectively (p = 0.0001). No fecal coliforms were detected in any of the bottled water samples. However, they were isolated from tap (7%) and well water samples (22%), p = 0.001. Escherichia coli content was found to have the highest percentage distribution compared with other coliforms subtypes in both tap and well water. Parasitological analysis detected only few cysts of Entameba coli in both tap (3%) and well (4%) samples while Giardia lamblia cysts (2%) were only detected in well water. There was a wide variation in concentrations of TDS in the 300 water samples. Chemical analysis of well water showed levels above the maximum limits of Saudi and international recommended standards and guidelines for salinity of drinking water.
Conclusion: Water derived from wells in rural areas of Riyadh showed microbial contamination and high total dissolved solids.
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1. Abdel-Aal SI Rabie RK Abdel Magid HM. Evaluation of groundwater quality for irrigation in Central Saudi Arabia. Arab Gulf Sci Res. 1997; 15:361-77.
2. Al-Otaibi EL. Bacteriological assessment of urban water sources in Khamis Mushait Governorate southwestern Saudi Arabia. Int J Health Geogr. 2009; 8:16-23.
3. Ahmed M Bajahlan S. Quality comparison of tap water vs. bottled water in the industrial city of Yanbu (Saudi Arabia). Environ Monit Assess. 2009; 159:1-14.
4. Hamad I Al-Enazi F Al-Sharari. Inorganic components in drinking water collected from schools coolers and some bottled water brands sold on Sakaka markets Saudi Arabia. Bioscience Res. 2011; 8:38-43.
5. Lee SH Kim SJ. Detection of infectious enteroviruses and adenoviruses in tap water in urban areas in Korea. Water Res. 2002; 36:248-56.
6. Melnick JL Gerba CP. Is the water safe to drink?. J Infect Dis. 1979; 139:736-7.
7. Ahmed QA Arabi YM Memish ZA. Health risks at the Hajj. Lancet. 2006; 367:25.
8. Abed KF Alwakeel SS. Mineral and microbial contents of bottled and tap water in Riyadh Saudi Arabia Middle-East. J Scien Res. 2007; 2:151-6.
9. Abu-Zeid HA Aziz MA Abolfotouh M Moneim MA. Bacteriologic potability of the drinking water in a diarrhoea area in southwestern Saudi Arabia. J Egypt Pub Health Assoc. 1995; 70:279-91.
10. Al-Ghamdi MA Bentham G Hunter PR. Environmental risk factors for diarrhea among male school children in Jeddah City Saudi Arabia. J Water Health. 2009; 7: 380-91.
11. Fewtrell L Bartram J. Water quality: guidelines standards and health London UK: IWA Publishing; 2001.
12. Viau EJ Goodwin KD Yamahara KM Layton BA Sassoubre LM Burns SL et al. Bacterial pathogens in Hawaiian coastal streams-Associations with fecal indicators land cover and water quality. Water Res. 2011; 45:3279-90.
13. Westrell T Bergstedt O Stenstr m TA Ashbolt NJ. A theoretical approach to assess microbial risks due to failures in drinking water systems. Int J Environ Health Res. 2003; 13:181-97.
14. Health Canada. Guidelines for Canadian drinking water quality: guideline technical document-bacterial waterborne pathogens: current and emerging organisms of concern. Water Quality and Health Bureau Healthy Environments and Consumer Safety Branch Health Canada Ottawa Ontario; 2006.
15. Ali MS Osman GA. Microbial load as pollution indicator in water of El-Khadra lake at Wadi El-Natroun Egypt. J Am Sci. 2010; 6:489-96.
16. Areeshi MY Beeching NJ Hart CA. Cryptosporidiosis in Saudi Arabia and neighboring countries. Ann Saudi Med. 2007; 27:325-32.
17. Bolbol AS. Cryptosporidiosis in young children suffering from diarrhea in Riyadh Saudi Arabia. J Hyg Epidemiol Microbiol Immunol. 1992; 36: 396-400.
18. Koneman WE Allen SD Janda WM Schreckenberger PC Winn WCJr. Diagnostic microbiology. 4th ed. J. B. Lillincott Company Philadelphia; 1992.
19. Steiner TS Thielman NM Guerrant RL. Protozoal Agent: What are the dangers for public water supply?. Ann Rev Med. 1997; 48:329-40.
20. Al-Redhaiman KN Abdel Magid HM. The applicability of the local and international water quality guidelines to AI-Qassim Region of central Saudi Arabia. Water Air Soil Poll. 2002; 137:235-46.
21. Moghazi HM A1-Shoshan AA. A study of increasing salinity of water wells in AL-Qassim Region Saudi Arabia A paper presented in the 4th Gulf water conference Manama the State of Bahrain; 1999.
22. American Public Health Association (APHA) Standard methods for examination of water and wastewater. 20th ed. Washington DC USA; 1998.
23. Kaplan RL. Microscopic examination of fecal specimens: permanent stained smear (trichrome) p. 18.104.22.168-22.214.171.124. In: H. D. Isenberg (ed.) Clinical microbiology procedures handbook vol. 2. American Society for Microbiology Washington D.C; 1992.
24. Shimizu RY. Special stains for coccidia and cynobacterium- like bodies: modified Ziehl-Neelsen acid fast stain. In Clinical Microbiology Procedures Handbook. Vol. 2. Edited by Isenberg H. D. American Society of Microbiologists Washington 126.96.36.199; 1992.
25. Saudi Arabian Standards Organization. Bottled and unbottled drinking water. 2 nd ed. SASO Information Center Riyadh Saudi Arabia pp: 1-8.
26. USEPA. National primary drinking water regulations; fluoride; final rule and proposed rule. US Environmental Protection Agency. Federal Register. 1984; 50: 47142-71.
27. World Health Organization. Guidelines for drinking water quality. 2nd ed Geneva; 1993.
28. Levesque R. SPSS programming and data management: a guide for SPSS and SAS users 4th ed. SPSS Inc. Chicago III; 2007.
29. Al-Turki AI Abdel Magid HM. Nitrate content of drinking and irrigation water in AI-Qassim Region - central Saudi Arabia Mansura. J Agric Sci. 2003; 11: 7943-50.
30. Davies RB Hibler CP. Animal reservoirs and crossspecies transmission of Giardia p. 104-126. In W. Jakubowski and JC Hoff (ed.). Waterborne transmission of giardiasis. Environmental Protection Agency Cincinnati; 1979.
31. Karanis P Schoenen D Maier WA Seitz HM. Drinking water and parasites. Immunitat and Infection. 1993; 21:132-6.
32. Jonnalagadda PR Bhat RV. Parasitic contamination of stored water used for drinking/cooking in Hyderabad. Southeast Asian J Trop Med Pub Health. 1995; 4:789-94.
33. Rimhanen-Finne R H nninen ML Vuento R Laine J Jokiranta TS Snellman M et al. Contaminated water caused the first outbreak of giardiasis in Finland 2007: a descriptive study. Scand J Infect Dis. 2010; 42: 613-9.
34. Hashim AR. Aanalysis of water and soils for Ashafa Toraba Wahat and Wehait’. J King Saud Univ. 1990; 2: 87-94.
35. Zaki MSA. Byomi AM Hussein MM. Hygienic evaluation of water used in some broiler farms around Sadat city in Menoufia governorate. Procs of the 6th Vet Med Zagazig Conference. 2002; 209-24.
36. Ortiz RM. Assessment of microbial and chemical water quality of individual and small system groundwater supplies in Arizona. PhD thesis. University of Arizona Department of Soil and Environmental Science; 2007.
37. Kistemann T Classen T Koch C Dangendorf F Fischeder R Gebel J et al. Microbial load of drinking water reservoir tributaries during extreme rainfall and runoff. Appl Environ Microbiol. 2002; 65:251-64.
38. Arab S Alshikh A. Electrochemical techniques for measuring some trace heavy metals in Taps Water of Riyadh in Saudi Arabia. Nature Sci. 2012; 10:109-14.
39. Zubari WK AI-Junaid IM AI-Manaii SSS. Trends in the quality of groundwater in Bahrain with respect to salinity 1941-1992. Environ. Internat. 1994; 20: 739-46.
40. Evans TM LeChevallier MW Waarvick CE Seidler RJ. Coliform species recovered from untreated surface water and drinking water by the membrane filter standard and modified most-probable-number techniques. Appl Environ Microbiol. 1981; 41:657-63.
41. Nabil M Alaa El-Din Ismail M Madany A Al- Tayaran A. Al-Jubair H et al. Quality of water from some wells in Saudi Arabia .Water Air Soil Poll. 1993; 66:135-43.