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Safe Water System (SWS) - Where Has the SWS Been Used?
- Guatemala
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| Safe Water Home
> Where?
> Guatemala
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Project Partners
 CDC
Universidad de Valle, Guatemala City, Guatemala
Instituto Nutricional de Centroamerica y Panama,
Guatemala City, Guatemala
The Procter and Gamble Company
Target Populations/Location
- Food vendors in municipal marketplaces in Guatemala
City
Project Design
- Research project to determine whether use of the
SWS would improve the quality of beverages prepared
by street vendors
Intervention Elements
- CDC safe water storage vessel
- Locally available commercial bleach
- Antibacterial soap
- Health education
Project Implementation
Date
 June
1996
Results of Project Evaluations
- Street-vended foods and beverages, an integral
part of urban economics in the developing world,
have been implicated in cholera transmission in
Latin America. To improve the microbiologic quality
of market-vended beverages in Guatemala, we tested
a simple system consisting of dilute bleach (4.95%
free available chlorine) for water purification,
narrow-mouth plastic vessels with spigots for disinfecting
and storing water and for preparing and storing
beverages, handwashing soap, and education in using
the system. We conducted a randomized controlled
intervention trial among 41 vendors who received
the intervention and 42 control vendo
 rs,
comparing total and fecal coliform bacteria and
Escherichia coli contamination of market-vended
beverages, stored water, and vendors' hands. Samples
were obtained at baseline and at each of six weekly
follow-up visits. At baseline, fecal coliform bacteria
were found in 40 (48%) market-vended beverages and
E. coli in 14 (17%). When compared with samples
from control vendors, a significant decrease in
total coliform (P<0.001) and fecal coliform (P<0.001)
bacteria in samples of stored water and beverages
sold by intervention vendors was observed over the
course of the study. The vessel system was well
accepted by vendors.
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Date:
August 24, 2005
Content source: National Center for Infectious Diseases
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PDF 415KB
