Treating household drinking water with chlorine tablets does not prevent diarrhoea, study concludes

BMJ 2013; 347 doi: (Published 30 August 2013) Cite this as: BMJ 2013;347:f5372
  1. Cheryl Travasso
  1. 1Mumbai

Using tablets to chlorinate household drinking water does not reduce the prevalence of diarrhoea in children, a study conducted in India has found.

Diarrhoeal diseases affect over 287 000 people each year in India. Some research has indicated that household water treatment and safe storage interventions, such as boiling, chlorinating, and filtering, can reduce the incidence of diarrhoea by 30-40%. As a result the World Health Organization and Unicef have recommended such an approach, particularly in populations that do not have access to safe water supplies. In India only 11% of people in rural areas have a household water supply.

However, a large double …

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