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Psutka, R; Peletz, R; Michelo, S; Kelly, P; Clasen, T (2011)
Publisher: American Chemical Society
Languages: English
Types: Article
Subjects:
Identifiers:doi:10.1021/es2004045
Boiling is the most common method of disinfecting water in the home and the benchmark against which other point-of-use water treatment is measured. In a six-week study in peri-urban Zambia, we assessed the microbiological effectiveness and potential cost of boiling among 49 households without a water connection who reported "always" or "almost always" boiling their water before drinking it. Source and household drinking water samples were compared weekly for thermotolerant coliforms (TTC), an indicator of fecal contamination. Demographics, costs, and other information were collected through surveys and structured observations. Drinking water samples taken at the household (geometric mean 7.2 TTC/100 mL, 95% CI, 5.4-9.7) were actually worse in microbiological quality than source water (geometric mean 4.0 TTC/100 mL, 95% CI, 3.1-5.1) (p < 0.001), although both are relatively low levels of contamination. Only 60% of drinking water samples were reported to have actually been boiled at the time of collection from the home, suggesting over-reporting and inconsistent compliance. However, these samples were of no higher microbiological quality. Evidence suggests that water quality deteriorated after boiling due to lack of residual protection and unsafe storage and handling. The potential cost of fuel or electricity for boiling was estimated at 5% and 7% of income, respectively. In this setting where microbiological water quality was relatively good at the source, safe-storage practices that minimize recontamination may be more effective in managing the risk of disease from drinking water at a fraction of the cost of boiling.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • (1) Kosek, M.; Bern, C.; Guerrant, R. The global burden of diarrhoeal disease, as estimated from studies published between 1992 and 2000. Bull. W. H. O. 2003, 81, 197-204.
    • (2) WHO/UNICEF. Joint Monitoring Programme (JMP) for Water Supply and Sanitation, 2010.
    • (3) Fewtrell, L.; Kaufmann, R.; Kay, D.; Enanoria, W.; Haller, L.; Colford, J. Water, sanitation, and hygiene interventions to reduce diarrhoea in less developed countries: a systematic review and metaanalysis. Lancet Infect. Dis. 2005, 5 (1), 42-52.
    • (4) Clasen, T.; Schmidt, W. P.; Rabie, T.; Roberts, I.; Cairncross, S. Interventions to improve water quality for preventing diarrhoea: systematic review and meta-analysis. Br. Med. J. 2007, 334 (7597), 782-785.
    • (5) Waddington, H.; Snilstveit, B.; White, H.; Fewtrell, L., Water, sanitation and hygiene interventions to combat childhood diarrhoea in developing countries. Synth. Rev. 2009, 1.
    • (6) Clasen, T.; Bartram, J.; Colford, J.; Luby, S.; Quick, R.; Sobsey, M. Comment on “Household Water Treatment in Poor Populations: Is There Enough Evidence for Scaling Up Now? Environ. Sci. Technol. 2009, 43 (14), 5542-5544.
    • (7) Hunter, P. Household water treatment in developing countries: Comparing different intervention types using meta-regression. Environ. Sci. Technol. 2009, 43 (23), 8991-8997.
    • (8) Sobsey, M. Managing Water in the Home: Accelerated Health Gains from Improved Water Supply; World Health Organization: Geneva, Switzerland, 2002.
    • (9) Rosa, G.; Clasen, T. Estimating the scope of household water treatment in low- and medium-income countries. Am. J. Trop. Med. Hyg. 2010, 82 (2), 289-300.
    • (10) Gilman, R.; Skillicorn, P. Boiling of drinking-water: Can a fuelscarce community afford it? Bull. W. H. O. 1985, 63 (1), 157.
    • (11) Emergency Preparedness & Response: Emergency Water Storage and Purification; US Centers for Disease Control and Prevention: Atlanta, GA, 2005.
    • (12) Guidelines for Drinking Water Quality; World Health Organization: Geneva, Switzerland, 2004.
    • (13) Clasen, T.; Hoang, D.; Boisson, S.; Shipin, O. Microbiological effectiveness and cost of boiling to disinfect drinking water in rural Vietnam. Environ. Sci. Technol. 2008, 42 (12), 4255-4260.
    • (14) Rehfuess, E.; Mehta, S.; Pr€uss- U€st€un, A. Assessing household solid fuel use: Multiple implications for the Millennium Development Goals. Environ. Health Perspect. 2006, 114 (3), 373.
    • (15) Biran, A.; Abbot, J.; Mace, R. Families and firewood: A comparative analysis of the costs and benefits of children in firewood collection and use in two rural communities in sub-Saharan Africa. Hum. Ecol. 2004, 32 (1), 1-25.
    • (16) Smith, K.; Uma, R.; Kishore, V.; Zhang, J.; Joshi, V.; Khalil, M. Greenhouse implications of household stoves: An analysis for India. Annu. Rev. Energy Environ. 2000, 25 (1), 741-763.
    • (17) Ezzati, M. Comparative Quantification of Health Risks: Global and Regional Burden of Disease Attributable to Selected Major Risk Factors; World Health Organization: Geneva, Switzerland, 2004.
    • (18) Smith, K. Indoor air pollution in developing countries: Recommendations for research. Indoor Air 2002, 12 (3), 198-207.
    • (19) Wright, J.; Gundry, S.; Conroy, R. Household drinking water in developing countries: A systematic review of microbiological contamination between source and point-of-use. Trop. Med. Int. Health 2004, 9 (1), 106-117.
    • (20) Clasen, T.; McLaughlin, C.; Nayaar, N.; Boisson, S.; Gupta, R.; Desai, D.; Shah, N. Microbiological effectiveness and cost of disinfecting water by boiling in semi-urban India. Am. J. Trop. Med. Hyg. 2008, 79 (3), 407-413.
    • (21) Rosa, G.; Miller, L.; Clasen, T. Microbiological effectiveness of disinfecting water by boiling in rural Guatemala. Am. J. Trop. Med. Hyg. 2010, 82 (3), 473-477.
    • (22) Eaton, A.; Franson, M. Standard Methods for the Examination of Water & Wastewater; American Public Health Association: Washington, DC, 2005.
    • (23) Elliott, J.; Lira, C. Introductory Chemical Engineering Thermodynamics; Prentice Hall: Upper Saddle River, New Jersey, 1999.
    • (24) Lindskog, R.; Lindskog, P. Bacteriological contamination of water in rural areas: An intervention study from Malawi. J. Trop. Med. Hyg. 1988, 91 (1), 1-7.
    • (25) van Klaveren, M.; Tijdens, K.; Hughie-Williams, M.; Martin, N. An Overview of Women"is Work and Employment in Zambia; University of Amsterdam/ Amsterdam Institute for Advanced Labour Studies (AIAS): Amsterdam, Netherlands, 2009.
    • (26) Oswald, W.; Lescano, A.; Bern, C.; Calderon, M.; Cabrera, L.; Gilman, R. Fecal contamination of drinking water within peri-urban households, Lima, Peru. Am. J. Trop. Med. Hyg. 2007, 77 (4), 699.
    • (27) Gupta, S.; Suantio, A.; Gray, A.; Widyastuti, E.; Jain, N.; Rolos, R.; Hoekstra, R.; Quick, R. Factors associated with E. coli contamination of household drinking water among tsunami and earthquake survivors, Indonesia. Am. J. Trop. Med. Hyg. 2007, 76 (6), 1158.
    • (28) Arnold, B.; Arana, B.; Mausezahl, D.; Hubbard, A.; Colford, J., Jr. Evaluation of a pre-existing, 3-year household water treatment and handwashing intervention in rural Guatemala. Int. J. Epidemiol. 2009, 38, 1651.
    • (29) Luby, S.; Mendoza, C.; Keswick, B.; Chiller, T.; Hoekstra, R. Difficulties in bringing point-of-use water treatment to scale in rural Guatemala. Am. J. Trop. Med. Hyg. 2008, 78 (3), 382.
    • (30) Wegelin, M.; Canonica, S.; Mechsner, K.; Fleischmann, T.; Pesaro, F.; Metzler, A. Solar water disinfection: Scope of the process and analysis of radiation experiments. Aqua 1994, 43 (4), 154-169.
    • (31) Clasen, T.; Haller, L. Water Quality Interventions to Prevent Diarrhoea: Cost and Cost-Effectiveness; World Health Organization: Geneva, Switzerland, 2008.
    • (32) Blum, D.; Feachem, R. Measuring the impact of water supply and sanitation investments on diarrhoeal diseases: Problems of methodology. Int. J. Epidemiol. 1983, 12 (3), 357.
    • (33) Roberts, L.; Chartier, Y.; Chartier, O.; Malenga, G.; Toole, M.; Rodka, H. Keeping clean water clean in a Malawi refugee camp: A randomized intervention trial. Bull. W. H. O. 2001, 79, 280-287.
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