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Deep Springs International is a US nonprofit corporation, headquartered in Léogâne, Haiti, which supports the establishment and expansion of Gadyen Dlo social enterprises. Gadyen Dlo has been produced and distributed in Haiti since 2002, originally supported by Emory University and the US Centers for Disease Control.
Gadyen Dlo is a Haitian produced 0.7% sodium hypochlorite liquid solution used to chlorinate drinking water at "point of use." Gadyen Dlo is produced at four sites throughout Haiti. Gadyen Dlo is distributed to households in refillable bottles, preferably along with safe water storage containers.
Several studies by MIT and Emory University have consistently shown that 65 – 85% of households had positive chlorine residual at the time of an unannounced visit. An evaluation in 2007 revealed 76% of tests conducted by technicians showed positive chlorine residual, and there was no significant decrease in correct use after more than three years of families’ entrance into the program. An independent evaluation in 2010 among 706 children under 5 documented a reduction in diarrhoeal disease incidence of 51%.