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Frontiers of Engineering Reports on Leading-Edge Engineering from the 2005 Symposium (2006) / Chapter Skim
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Engineering Inputs to the CDC Safe Water System Program
Pages 45-52

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From page 45...
... LANTAGNE U.S. Centers for Disease Control and Prevention Atlanta, Georgia In September 2000, the United Nations General Assembly adopted the Millennium Development Goals (MDGs)
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From page 46...
... From 1993 to 2003, CDC assisted PSI in eight countries, and NGOs or government ministries in six additional countries, to establish SWS projects. In each location, the best packaging option for the solution was either selected from available existing plastic bottles and caps or contracted in-country for new bottle and cap designs.
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From page 47...
... A loading factor, called the "dose factor," was developed for comparing dosing strategies for different packaging options. The dose factor is simply the hypochlorite concentration in percent multiplied by the amount (in mL)
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From page 48...
... adding a dose factor of 1.875, 3.75, and 7.5 of sodium hypochlorite to one container from each source; and (4) testing free and total residual chlorine at 1, 2, 4, 8, and 24 hours after the addition of chlorine to determine the dose factor that leads to a free chlorine residual value of less than 2.0 mg/L one hour after the addition and greater than 0.2 mg/L 24 hours after the addition.
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From page 49...
... PSI designs brand names for health products, sells them at low cost, distributes them through wholesale and retail commercial networks, and generates demand through behavior-change communications, such as radio and TV spots, mobile video units, point-of-sale materials, theatrical presentations, and person-to-person communication. Currently, PSI has SWS programs in 13 countries; programs in eight additional countries are expected to be launched by mid-2006.
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From page 50...
... The SWS program operated by PSI has not only had an impact at the country level but has also brought these benefits to regions throughout Africa and Asia. CONCLUSION The SWS is a proven, low-cost intervention that has the potential of providing safe drinking water in areas where there will be no infrastructure to treat water in the near future and of significantly reducing morbidity from waterborne diseases and improving the quality of life for millions of people.
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From page 51...
... Eric Mintz stating SWS dosing regime complies with WHO guideline values. Email dul4@cdc.gov for PDF file.
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Key Terms

  • safe water
  • drinking water
  • sodium hypochlorite
  • free chlorine
  • american journal

  • tropical medicine
  • engineering inputs
  • safe drinking
  • services international
  • water treatment

  • population services
  • chlorine residual
  • mdg target
  • waterborne disease
  • waterborne diseases

  • chlorine demand
  • regional product
  • residual chlorine
  • hypochlorite concentration
  • improved sources

  • psi kenya
  • providing safe
  • reduced product
  • sws advises
  • kenya regional

  • sws program
  • initial sws
  • dosing requirements
  • comparing dosing
  • dosing strategy


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