The presence of diarrhoeagenic bacteria such as Escherichia coli in drinking water indicates faecal and sewage contamination. Testing the microbial quality of drinking water at source (n = 29) and households (n = 43) of 29 peri-urban villages of Bengaluru city, indicated that 80% and 93% of samples respectively were unfit for human consumption as per WHO standards, i.e. nil E. coli in 100 ml sample. This also indicated that water gets contaminated further at the point-of-use when compared to the source.
Original Source [2]
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Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/drinking-water-contamination-peri-urban-bengaluru-india
[2] http://www.currentscience.ac.in/Volumes/113/09/1702.pdf
[3] http://admin.indiaenvironmentportal.org.in/category/author/g-sheeba
[4] http://admin.indiaenvironmentportal.org.in/category/author/anjaneyulu-jalagam
[5] http://admin.indiaenvironmentportal.org.in/category/author/padma-venkatasubramanian
[6] http://admin.indiaenvironmentportal.org.in/category/journal/current-science
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/urban-water-supply
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water-standards
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bangalore-t
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waterborne-diseases
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/groundwater-pollution
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sewage-pollution
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-quality
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
