MICROBIOLOGICAL ANALYSIS OF DRINKING WATER IN UZHAVOOR PANCHAYAT OF KOTTAYAM DISTRICT-KERALA, INDIA
UTTAR PRADESH JOURNAL OF ZOOLOGY, Volume 42, Issue 24,
A total 102 drinking water samples were collected from Uzhavoor Grama Panchayat and estimated the most probable number of Coliforms in the water samples by MPN method and out of which 16 samples were only potable and 86samples were non potable. Five public water supply systems which showed presence of Escherichia coli in the first analysis were selected for a detailed study as the number of beneficiaries of these water sources was high. Isolation and identification of enteric bacteria by biochemical characterisation such as Gram staining, motility and IMViC test and determination of physico-chemical factors of the selected samples were also done. The presence of high level of coliforms was observed in three samples which may be due to the sewage and septic tank contamination leading to the occurrence of possible bacterial or viral contamination from human sewage or animal manure. Physicochemical Analysis of the selected five water samples indicated that pH, conductivity, total Dissolved Solids (TDS), Salinity and temperatures are almost in a safe level as per WHO guidelines. But chloride level was higher in the water samples than the safe limit (0-35ppm). All the samples had very low hardness. Copper was reported absent in all the samples.
Result of the study clearly indicated that most of the water sources in this area is polluted increasingly and that it may create serious threat to human health and environment. Some of the parameters were outside the accepted limits recommended by the World Health Organization for drinking water. It is concluded that water from these sources should be disinfected with lime and bleaching powder
- drinking water
- enteric bacteria
How to Cite
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