| Resumo: | Globally, unsafe water supplies due to contamination with fecal coliforms are major issues in urban
slums. To determine the presence of microbial risk, water samples were collected from three slums
in the port city Chattogram and the MPN method was used to test for the presence of fecal coliform.
All of the samples tested positive by the MPN test. The highest count was 1,100 MPN/100 ml and the
lowest count was 7.2 MPN/100 ml. Water stored in containers was prone to being more
contaminated than water collected directly from the source. To understand the antibiotic resistivity
of the coliform bacteria isolated from the water samples, antibiotic susceptibility was evaluated
using the Kirby-Bauer disc method for six antibiotics. All the bacteria were 100% resistant to
Penicillin-G and Ampicillin, and 91.7% showed resistance to Amoxicillin and Mecillinam. An
integrated approach to water, sanitation, and hygiene education must be undertaken when providing
sustainable interventions in slums.
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