Deep Springs International (DSI)
Gadyen Dlo, or “Water Guardian” in Haitian Creole, is a liquid chlorine product sold by the bottle for household water potabilization. This water treatment product is intended to remove/inactivate bacterial, viral, and some parasitic contamination from drinking water to reduce the transmission of water-borne diseases and incidences of diarrhea.
Gadyen Dlo was designed and targeted specifically for Haiti.
Rural households in Haiti.
Locally produced in Léogâne, Haiti; Machine-automated processing operated out of a house.
Sold in Léogâne, Haiti via a network of 150 health workers.
Over 718,000 bottles have been distributed.
Included is one 8 ounce bottle with cap for dosing and instructions in Haitian Creole with illustrations. Other purchasing option is 1 gallon containers. Almost always, 5 gallon safe-water-storage buckets with spout are distributed for free.
See CDC training manual Module 7 for product schematic and training information
Federal, State, and local regulations to be consulted for disposal.
Treats an average family’s water for 6 weeks.
In conjunction with proper household treatment and storage, tests have shown 80% reduction in water-borne diseases.
Global Health Institute and Sustainability Initiatives at Emory University and by the Eugene Gangarosa Endowment at the Centers for Disease Control and Prevention (CDC) Foundation.
If one family is using a container that is not covered, it will need to treat the water every 24 hours. If the container is covered and has a tap, the family only needs to treat it one time.
Pouring water through a clean cloth before treating with chlorine can improve quality of resultant drinking water.
“Evaluating the Long-Term Health Impact of Household Chlorination of Drinking Water in Rural Haiti” Harshfield et al.
“Use of Household Water Treatment and Safe Storage Methods in Acute Emergency Response: Case Study Results from Nepal, Indonesia, Kenya, and Haiti” Lantagne et al.
“Gadyen Dlo “Water Guardian”: A Qualitative Study of the Influence of Cholera on Household Water Treatment Practices in Haiti” Garnett et al
• NSF / ANSI Standard 60: Drinking Water Treatment Chemicals: Gadyen Dlo is not specificially listed as complying, but dozens other companies selling sodium hypochlorite products for drinking water treatment are approved. This certifies that chemicals are safe at the maximum dose and that any impurities are below the maximum allowable limit.
• US Environmental Protection Agency (EPA) Registration: Gadyen Dlo is not registered with the EPA, sodium hypochlorite has been registered since 1957, and the EPA issued a registration standard in 1986 saying that sodium hypochlorite products (with 5.25% – 12.5% chlorine) do not need individual registration review. The document also states that, “widely used in disinfecting water supplies for nearly a century, the hypochlorites have been proven safe and practical to use”.
• World Health Organization (WHO):The World Health Organization does not currently approve products for use to treat drinking water. However, the Guidelines for Drinking Water Quality list liquid NaOCl with concentrations between 0.5% and 1% as a point-of-use water treatment method commonly used to prevent diarrhea in developing countries and for travelers WHO Guidelines for drinking water quality.
World Health Organization Water Quality Guidelines.
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