Abstract
Abstract 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 most probable number (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.
Highlights
Millions of people do not have access to an adequate supply of safe drinking water, which is universally recognized as a basic need
According to WHO drinking water guidelines, fecal coliform (E. coli or thermotolerant coliform bacteria) should not be detectable in any water source that is for drinking purposes (WHO )
According to the results of the most probable number (MPN) test (Table 1), all the samples collected for the study showed the presence of coliform bacteria and tested positive for either E. coli or thermotolerant coliform bacteria (Enterobacter)
Summary
Millions of people do not have access to an adequate supply of safe drinking water, which is universally recognized as a basic need. 2017, 2.2 billion people lack safely managed water services, with 579 million depending on unprotected and untreated water sources (UNICEF/WHO ). 4.2 billion lack safely managed sanitation and 3 billion lack access to basic handwashing facilities (UNICEF/WHO ), contributing to 10% of the global disease burden, mainly diarrhea (Mara et al ). The spread of many infectious waterborne diseases such as cholera, typhoid, hepatitis, polio, schistosomiasis, etc., Downloaded from http://iwaponline.com/ws/article-pdf/21/1/146/839974/ws021010146.pdf by guest. Chowdhury et al | Enteric bacteria and antibiotic resistance in drinking water
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