Abstract
To analyze the microbiological quality of drinking water from different sources (tap
water, open wells, stream water, spring water and water supply networks such as
municipal main storage tank) in rural communities of the Oghi; a total of 175 water
samples were collected from the study area with 35 samples from each source.
All the samples were analyzed for microbial contamination by pour plate method,
membrane filtration technique and MacConkey agar for the isolation of
Enterobacteriaceae. Different identification tests have been carried out by using
various selective and differential media (MacConkey agar, Eosine & Methylene
Blue agar) for isolation and identification of microorganisms.Water samples
showed the presence of faecal contamination; especially coliform bacteria which
is a risk for the health of local community. Salmonella spp. was detected in 7.42
% of water samples having range 1-20 CFU 100ml-1
, while E.coli was detected in
91.4% of water samples having colonial population between 1-40 CFU/100ml.
According to this study, 98 % of the water sources of study area did not meet the
safe limits for drinking water of the country as well as the WHO guidelines.
Conclusively it was declared that water quality is unacceptable for human
consumption. It is therefore recommended that the authorities should take every
possible measure to provide safe and clean water to household especially
drinking water. Filtration plants, proper chlorination and awareness program
should be carried out for safe drinking water.
SAEED AHMED, ZIA-UR-RAHMAN, SALMA KHALID, TARIQ KHAN, ARSHAD IQBAL, ZAMARUD SHAH. (2017) Bacterial Contamination of Drinking Water in Tehsil Oghi, Mansehra Pakistan, Biologia – Journal of Biological Society of Pakistan, Volume 63 (II), Issue (II).
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