Researchers:
Country:
Status:
Ongoing
Short Description:
Lack of clean water makes millions of children sick each year, affecting their ability to live a full life. A new innovation, bulk chlorine dispensers placed near communal water sources, could be a major new tool for fighting child mortality. By providing families with convenient and cheap access to clean water, chlorine dispensers could save the lives of up to a quarter of a million children each year.
Details of the Intervention:
Researchers examined free provision of dilute chlorine via a point-of-collection system, which includes a container to dispense the product placed at the water source, a local promoter to encourage the product’s use, and free provision of a supply of chlorine solution packed in bulk. This bulk supply dramatically reduces delivery costs relative to the retail approach, which requires packaging chlorine in small bottles, and relative to door-to- door distribution, which in addition significantly raises marketing costs. Hence, bulk distribution to water sources makes free provision more realistic. Additionally, this delivery method makes chlorine use very convenient. Users can treat drinking water when they collect it. The required agitation and wait time for chlorine-treated water are at least partially accomplished automatically during the walk home from the source. The source-based dilute chlorine disinfection approach to water treatment makes this act salient and public, in addition to making it cheaper and more convenient. The dispenser provides a daily visual reminder to households to treat their water at the moment when it is most salient—as water is collected—and maximizes the potential for learning, norm formation, and social network effects by making the dispenser public. Potential users can see others who use the dispenser, and they have the opportunity to ask questions; they will also know that others will see whether they use the dispenser
Results and Policy Implications:
Take-up of chlorine provided through dispensers dramatically exceeded take-up of chlorine for treating water for in-home use. When communities were randomly assigned to receive a promoter and a community dispenser, take-up was approximately 40% in the short run (three weeks) but climbed to more than 60% by the medium term (three to six months), representing 37- and 53-percentage point gains, respectively, compared to the communities that did not receive them.
In contrast to the take-up levels achieved with the dispensers, clinic-based coupon redemption started higher and dropped over time. More than 40% of households that were given coupons redeemed them 8 months into the program, but this figure fell to 20% by 12 months. This finding suggests that the success of the dispenser may be due not only to the zero price but also to the reduction in the psychic cost of remembering to treat water that is achieved by source-based treatment as well as other attributes, like the visual reminders. Although take-up rates are slightly lower than those achieved in some trials, the dispenser system relies far less on outside personal contact (e.g., from repeated household visits from enumerators) than do those approaches; hence, costs are significantly lower. The chlorine dispenser is extremely cost-effective, with a comparative study finding dispensers the most effective from a range of low cost approaches to reducing diarrhea.
The success of the chlorine dispensers at the proof-of-concept stage described here led to a concerted effort to scale the intervention up as a sustainable program. As of April 2014 over 1.8 million people were being served by chlorine dispensers, with plans to reach four million by the end of 2014.
The program has transitioned to Evidence Action, a new organization started with the support of IPA to scale evidence-based initiatives. More information can be found on their website here.
Papers:
Weight:
0
Featured on:
IPA
