Journal of Chemical, Biological and Physical Sciences Drinking Water

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MAY 2014 – JULY 2014, Vol. 4, No. 3; 2691-2700.

E- ISSN: 2249 –1929

Journal of Chemical, Biological and Physical Sciences An International Peer Review E-3 Journal of Sciences Available online atwww.jcbsc.org

Section D: Environmental Sciences CODEN (USA): JCBPAT

Research Article

Drinking Water Quality Assessment in Zimbabwe: A Case Study of Bottled Drinking Water from Selected Retail Outlets in Harare Power Ernest Gombiro1*, Joe Mukaro2, Kudzai Mugadza3, Gerard Ashley 4, Mark F. Zaranyika3, and Chakare Benhura1 1*

Institute of Food, Nutrition and Family Sciences, University of Zimbabwe. 2

Masvingo Polytechnic, Masvingo, Zimbabwe

3

Department of Chemistry, University of Zimbabwe, Harare, Zimbabwe

4

Department of Biological Sciences, University of Zimbabwe, Harare, Zimbabwe Received: 13 July 2013; Revised: 16 May 2014; Accepted: 25 May 2014

Abstract:The quality of bottled drinking water brands from retail shops in Harare was assessed from January to March 2011.Some parameters considered were pH, conductivity, Total dissolved solids (TDS), nitrates, sulphates, nitrites, chlorides, phosphates and total viable counts (TVC). Metals measured were sodium, potassium, lead, magnesium, iron, zinc, cadmium, manganese, calcium, copper, chromium and nickel. The pH of the brands of water ranged from 6.4±0.1 to 7.1±0.1.The mean values of nitrite levels for brands K1, K2, K4 and K5, ranged from 5.9±0 to 9.1µg/L and exceeded the limit set by WHO Guidelines for Drinking Water Quality and Zimbabwe Food Standards. Four brands complied with the WHO Guidelines for Drinking Water Quality and Zimbabwe Food Standards with respect toTotal Viable Counts while K1 exceeded the set limit. Faecal coliforms were absent in all the brands. The concentrations of lead and chromium in all brands exceeded the limits stipulated by WHO Guidelines for Drinking 2691

J. Chem. Bio. Phy. Sci. Sec. D, May 2014 – July 2014; Vol.4, No.3; 2691-2700.

Drinking Water…

Gombiro et al.

Water Quality. Nickel levels for brands K2 and K4 were 0.03±0.02 and 0.06±0.01 mg/L respectively and were above the limit published in the WHO Guidelines for Drinking Water Quality.There were no significant differences among the means of cadmium concentrations in the water brands (p>0.05). Means of the rest of the parameters measured in the bottled water brands were significantly different (p

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