Sodium dichloroisocyanurate (NaDCC) tablets as an alternative to sodium hypochlorite for the routine treatment of drinking water at the household level

Sodium dichloroisocyanurate (NaDCC) tablets as an alternative to sodium hypochlorite for the routine treatment of drinking water at the household level

Publication Year:
Clasen, Thomas; Edmondson, Paul
Affiliated Orgs.:
Medentech Ltd.
Resource Type:
Journal Article
This study explores sodium dichloroisocyanurate (NaDCC) as an alternative to sodium hypochlorite (NaOCl) for household water treatment. NaDCC, common in emergencies, might have benefits over NaOCl in development settings. The paper delves into NaDCC’s chemistry, safety, effectiveness, and field performance, then compares its acceptability, cost, and sustainability with NaOCl, highlighting areas for further research.
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Resource Information


Household water treatment using sodium hypochlorite (NaOCl) has been recognized as a cost-effective means of reducing the heavy burden of diarrhea and other waterborne diseases, especially among populations without access to improved water supplies. Sodium dichloroisocyanurate (NaDCC), which is widely used in emergencies, is an alternative source of chlorine that may present certain advantages over NaOCl for household-based interventions in development settings. We summarize the basic chemistry and possible benefits of NaDCC, and review the available literature concerning its safety and regulatory treatment and microbiological effectiveness. We review the evidence concerning NaDCC in field studies, including microbiological performance and health outcomes. Finally, we examine studies and data to compare NaDCC with NaOCl in terms of compliance, acceptability, affordability and sustainability, and suggest areas for further research.

Resource Type

Journal Article

Publication Year



Clasen, Thomas; Edmondson, Paul



Organizational Affiliation

Medentech Ltd.

Specific Contaminants

Bacteria, Viruses, Protozoa, Escherichia coli, Salmonella dysenteriae, Shigella sonnei, Campylobacter jejuni, Yersinia enterocolitica, hepatitis A, poliovirus (type 1), rotavirus, adenovirus, calicivirus, helminthes, Entamoeba histolytica, Giardia lamblia

University Affiliation

London School of Hygiene & Tropical Medicine

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