Many of the systems intended to provide clean water for families in some of the world's poorest communities may not work. That's the conclusion of Paul Hunter, a microbiologist at the University of East Anglia in Norwich, UK, who has assessed past studies of the effectiveness of household water treatment (HWT) systems.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/water-purifiers-poor-fail-prove-their-worth
[2] http://admin.indiaenvironmentportal.org.in/category/author/jessica-hamzelou
[3] http://admin.indiaenvironmentportal.org.in/category/journal/new-scientist
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-treatment-technology
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/drinking-water
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waterborne-diseases
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/diarrhoea
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/poverty
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/research
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-kingdom-uk