Physicochemical Characterization of Drinking Tap Water in Masha and Mizan-Aman Town, Southwest Ethiopia

Document Type: Original research article

Author

Department of Chemistry, College of Natural Sciences, Arbaminch UniversityP.O. Box 21, Ethiopia.

10.30473/ijac.2020.49311.1158

Abstract

Physicochemical characterization was carried out for the determination of the quality of drinking tap water from Masha, and Mizan-Aman town southwest Ethiopia. Known volume of tap water samples were digested by Standard Method 3030K microwave digestion system using 5 mL concentrated of HNO3 for 20 minutes at variable temperature (160-170 oC). After digestion with microwave acid digestion, some selected metals (Mg, Ca, Cu, Mn, Fe, Zn, Cd & Pb) were determined by Flame Atomic Absorption Spectrophotometer and the common anions were determined as follows, Ortho phosphorous (PO43-) by APHA4500-PC.Vanadomolybdphosphoric method, Chloride (Cl-) by APHA4500-Cl-B. Argentometric method, Carbonate( CO3-2) by APHA 2330B.Titration method, Nitrate (NO3-) and ammonia (NH3) by WTD photometer method (WAG PHOT-24).The concentration of these metals and common anions obtained in this study were found to be within the range of WHO and other international guideline lines except Cd. Levels of these metals concentration in this study was that, in all water samples, Mg was found in higher concentration followed by Ca, Fe, Mn, Zn, Cu and Cd respectively. Concentration of Pb was below the method detection limit in all water samples. Under this investigation, at p = 0.05, the physicochemical parameters of all water samples which were taken from different sites were significantly different among the distribution points and distribution systems. The concentrations of the selected metals and common anions were significantly different in between the distribution points and distribution systems except Zn in Mizan, Mn, Fe and Cd in Aman, NH3 in Masha, and Aman sites and in respective of the physical parameters, temperature and electrical conductivity of all the water samples were significantly different except in Masha site. pH and total hardness of all water samples were not significantly different in all sites except total hardness in Masha site.

Keywords


 

[1]     J.G.daSilva,Chemical analysis manual for food and water, J. Agric.Food Chemical    (1997) 20-26.

[2]     A. Njonjo and J. Lane, ''Rural Piped Water Supplies in Ethiopia, Malawi and Kenya:      Community management and Sustainability''(2000).https://www.wsp.org/sites/wsp/files/publications/328200711859_RuralPipedWater

[3]     S. Ewart and  M. Langfeld ''World Health Report: Making a difference'' World Health Organization, Geneva (2003). https://www.who.int/whr/2003/en/whr03_en.

[4]     I.C. Oladipo, I.C. Onyenike and A.O. Adebiyi, Microbiological analysis of some vended sachet water in Ogbomoso, Nigeria. Afr. J. Food Sci. 3 (2009) 406-412.

[5]     G.H. Brundtland and C. Bellamy, ''Global Water Supply and Sanitation Assessment Report'' (2000). https://www.who.int/water _sanitation_health/monitoring/jmp2000.

[6]     I.O. Okonko, O.D. Adejoje, T.A. Ogunnusi, E. Fajobi and O.B. Shittu, Microbiological and physicochemical analysis of different water samples used for domestic purposes in Abeokuta and Ojota, Lagos Nigeria, Afr. J. Biotechnol. 7 (2008) 617-621.

[7]     T.H.Y. Tebbutt, Principles of Quality Control, Pergamon Press, 4th edition, England (1983) 232.

[8]     A.I.Ihekoronye and P.O. Ngoddy, Integrated food science and technology for tropics, Oxford Macmillan Press, London (1985) 95-195.

[9]     O.O Lemo, ''Bacteriology Determination of water with long term storage'', B. Sc. Thesis, Abeokuta (2002).

[10] D. Barclay, Microwave digestion moves in to 21st century, JACS (2004) 28 – 32.

[11] C.H. Proctor, Simple Definition of Detection Limit: American Statistical Association and the International Biometric Society, J. Agr. Biol. Envir. St. 13 (2008) 1 – 23.

[12] D.A. Armbruster and T. Pry, Limit of Blank, Limit of Detection and Limit of Quantitation, Clin. Biochem. 29 (2008) 1 - 4.

[13] M. Thompson, S.R. Ellison and R. Wood, Harmonized guidelines for single laboratory validation of methods of analysis, Pure Appl. Chem. 74 (2002) 835 – 855.

[14] D.T. Burns,K. Danzer and A. Townshend, Use of the terms recovery and apparent recovery in analytical procedures, Pure Appl. Chem.74 (2002) 2201–2205.

[15] P.G.P. Reddy and G.V.S. Reddy, Physico-Chemical Analysis of Surface and Ground  Water of Selective Areas of UCILThummalapalliProject,  Ysr (Kadapa), A, India, AJSR  3 (2011) 163 – 178.

[16] M. Bhavan, ''Specification for Drinking Water'' Bureau of Indian Standards, New Delhi, (1998) 171-178.

[17] J.A. Ondo, P. Prudent, R.M. Biyogo, J. Rabier, F. Eba and M. DomeizeL, Translocation of metals in two leafy vegetables grown in urban gardens of Ntoum, Gabon, Afr. J. Agric. Res. 7 (2012) 5621 - 5627.

[18] Z.A. Alemu, K.T. Teklu, T.A. Alemayehu, K.H. Balcha and S.D. Mengesha, Physicochemical quality of drinking water sources in Ethiopia and its health impact: a retrospective study, Environ. Syst. Res. 4 (2015) 2-8.

[19] A. Haile, Assessment of Physicochemical Quality of Spring Water in Arbaminch, Ethiopia, J. Environ. Anal. Chem. 2 (2015) 1- 3.

[20] B. Tafa and E. Assefa, Detection of Copper and Zinc (Heavy Metals) in Water of Lake Chamo, Arbaminch Ethiopia, World J. Chem. Educ. 2 (2014) 42-47.

[21] T.  Alemu,  E. Mulugeta  and M. Tadese, Determination of physicochemical parameters of “Hora” natural mineral water and soil in Senkele Kebele,  Oromia Region, Ethiopia, Cogent. Chem. 3 (2017) 1 – 13.

[22] F. Abduro and G.W. Michael, Determination of heavy metals concentrations within the ever growing Lake Baseka, Ethiopia using spectrophotometric technique, Afr. J. Environ. Sci. Technol, 11 (2017) 146 – 150.

[23] D.L. Keshebo and M.Y. Degefu, Physicochemical parameters, Heavy metals and some ions Analysis in drinking water in selected Districts of Gedio Zone, Ethiopia, IJIAS 11 (2015) 1-5.

[24] N. Tsega, S. Sahile, M. Kibret, and B. Abera, Bacteriological and physico-chemical quality of drinking water sources in a rural community of Ethiopia, Afr. Health. Sci. 13 (2013) 1156- 1161.

[25] B.W. Olbasa, Characterization of Physico-chemical Water Quality Parameters of River Gudar, Oromia region, West Shewa Zone, Ethiopia for Drinking Purpose,OSR-JAC (2017)  47-52.

[26] P.C. Prabu, L. Wondimu and M. Tesso, Assessment of Water Quality of Huluka and Alaltu Rivers of Ambo, Ethiopia, J. Agr. Sci. Tech. 13 (2011)131-138.

[27] W.H.O, ''Exposure to cadmium: a major public health concern'', World Health Organization ,Geneva,(2010) http://www. who.int /ipcs /features/cadmium.pdf.