Pollution Research Paper

Vol. 35, Issue 4, 2016; Page No.(663-670)

MICROBIAL QUALITY OF GROUNDWATER USING OTHER THAN COMMON INDICATORS IN SINAI, EGYPT

OSMAN G.A. AND FARRAG A.H.

Abstract

Microbiologically, groundwater must be safe and free from biological pollutants for human consumption. So, the aim of this investigation is evaluation of groundwater using other than common indicators. Monthly, from 15 wells, samples were collected from North Sinai Governorate, Egypt during 2015. Results showed that, all samples were free form fecal bacterial indicators. Total viable bacterial averages counts at 370C and 22oC were accepted according to Egyptian Standard for drinking water except wells 9 and 11 samples. Results of staphylococci group and Pseudomonas sp. are detected in some samples with ratio 60 and 73.3% with total averages 0.64 and 1.10 MPN-index /100 mL, respectively. Moreover, results of treatment with experimental rats showed that Staphylococcus sp. as pathogenic bacteria causes histological and histochemical changes in liver and kidney as well as Pseudomonas sp. damages tissues cells of urinary and gastrointestinal tract. Also, result demonstrated that highest and lowest averages count values of bacilli-spore formers were recorded 7.5 and 0.88 cfu/mL in wells 11 and 6 water samples, respectively. While total yeast and fungi were disappeared (represented 20 % from all samples) in wells 5, 13 and 15 water samples as well as fungi was not detected in well 3. Therefore, it is not necessarily absent bacterial indicator in water to be fit for consumption and hence, must be treated it implementing universal guidelines and regulations to safeguard our water resources and public health.

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