Hypochlorite Solution Expiration and Stability in Household Water Treatment in Developing Countries
Publication: Journal of Environmental Engineering
Volume 137, Issue 2
Abstract
Household water treatment with dilute hypochlorite solution has been shown to improve microbiological water quality and reduce diarrheal disease in developing countries. One concern raised by governmental agencies, implementers, and nongovernmental organizations is whether the hypochlorite solution remains stable during distribution and after the bottle is opened and usage begins. In this study, laboratory and field research was conducted to determine the expiration date and stability in the home of hypochlorite solution. Expiration-date testing found that pH-stabilized hypochlorite solution made using various production techniques in Ethiopia, Guinea, and Nigeria was stable for a minimum of 12 months in temperatures less than . Stability testing during laboratory simulated normal usage showed no degradation, and 77–91% of bottles collected from households tested met standards. Hypochlorite solution concentration drops rapidly when pH is not stabilized, when pH levels fall, and when solution is exposed to direct sunlight.
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Acknowledgments
The writers would like to thank Clorox Cooperation for their assistance, as well as Prime Enterprises, PSI staff in Nigeria and Guinea, and JSWF staff in Haiti. The Lehigh University work was partially supported by a National Science Foundation CAREER grant to cowriter Jellison (Award No. NSF0545687). The in-country work was partially supported by the U.S. Agency for International Development, Population Services International, the Jolivert Safe Water for Families project, and Innovations for Poverty Action.
References
American Public Health Association/American Water Works Association/Water Environment Federation (APHA/AWWA/WEF). (1998). Standard methods for the examination of water and wastewater, 20th Ed., Washington, D.C.
Baqui, A. H., Black, R. E., Sack, R. B., Chowdhury, H. R., Yunus, M., and Siddique, A. K. (1993). “Malnutrition, cell-mediated immune deficiency, and diarrhea: A community-based longitudinal study in rural Bangladeshi children.” Am. J. Epidemiol., 137(3), 355–365.
Boschi-Pinto, C., Velebit, L., and Shibuya, K. (2008). “Estimating child mortality due to diarrhoea in developing countries.” Bull. World Health Organ, 86(9), 710–717.
Centers for Disease Control and Prevention (CDC). (2008). Safe water system (SWS)—Effect of chlorination on inactivating selected pathogens, Atlanta, Ga.
Chiller, T. M., et al. (2006). “Reducing diarrhoea in Guatemalan children: Randomized controlled trial of flocculant-disinfectant for drinking-water.” Bull. World Health Organ, 84(1), 28–35.
Clasen, T., Schmidt, W. P., Rabie, T., Roberts, I., and Cairncross, S. (2007). “Interventions to improve water quality for preventing diarrhoea: Systematic review and meta-analysis.” BMJ, 334(7597), 782–791.
Crump, J. A., et al. (2005). “Household based treatment of drinking water with flocculant-disinfectant for preventing diarrhoea in areas with turbid source water in rural western Kenya: Cluster randomised controlled trial.” BMJ, 331(7515), 478–484.
Gordon, G. (1996). “Bleach stability and filtration.” AWWA Water Quality Technology Conf., American Water Works Association (AWWA), Boston.
Gordon, G., Adam, L., and Bubnis, B. (1995). Minimixing chlorate ion formation in drinking water when hypochlorite ion in the chlorinating agent, AWWA Research Foundation/AWWA, Oxford, Ohio.
Guerrant, D. I., Moore, S. R., Lima, A. A., Patrick, P. D., Schorling, J. B., and Guerrant, R. L. (1999). “Association of early childhood diarrhea and cryptosporidiosis with impaired physical fitness and cognitive function four-seven years later in a poor urban community in Northeast Brazil.” Am. J. Trop. Med. Hyg., 61(5), 707–713.
Lantagne, D. (2008). “Sodium hypochlorite dosage for household and emergency water treatment.” J. Am. Water Works Assoc., 100(8), 106–119.
Luby, S. P., Agboatwalla, M., Hoekstra, R. M., Rahbar, M. H., Billhimer, W., and Keswick, B. H. (2004). “Delayed effectiveness of home-based interventions in reducing childhood diarrhea, Karachi, Pakistan.” Am. J. Trop. Med. Hyg., 71(4), 420–427.
Quick, R. E., et al. (1999). “Diarrhoea prevention in Bolivia through point-of-use water treatment and safe storage: A promising new strategy.” Epidemiol. Infect., 122(1), 83–90.
Quick, R. E., et al. (2002). “Diarrhea prevention through household-level water disinfection and safe storage in Zambia.” Am. J. Trop. Med. Hyg., 66(5), 584–589.
Reller, M. E., et al. (2003). “A randomized controlled trial of household-based flocculant-disinfectant drinking water treatment for diarrhea prevention in rural Guatemala.” Am. J. Trop. Med. Hyg., 69(4), 411–419.
Semenza, J. C., Roberts, L., Henderson, A., Bogan, J., and Rubin, C. H. (1998). “Water distribution system and diarrheal disease transmission: A case study in Uzbekistan.” Am. J. Trop. Med. Hyg., 59(6), 941–946.
World Health Organization (WHO). (2004). “Recommendations.” Guidelines for drinking-water quality, Vol. 1, 3rd Ed., Geneva.
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© 2011 ASCE.
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Received: Jun 30, 2009
Accepted: Jun 25, 2010
Published online: Jun 28, 2010
Published in print: Feb 2011
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