A revolutionary, low-cost water filter is showing extraordinary potential in tackling Pakistan’s high rates of child malnutrition and preventable deaths, according to preliminary research from Aga Khan University (AKU).
“This is the first time we’ve seen near-complete uptake of any household water intervention, which is why it’s proving effective,” Professor Zafar Fatmi, head of the Section of Environmental, Occupational Health and Climate Change in AKU’s Department of Community Health Sciences, said on Thursday. “Here, safe water acts as food. By preventing diarrhea, it helps children absorb food properly and recover from illness faster.”
The study, conducted in rural Sindh, found that the simple device led to a significant reduction in diarrheal diseases and a marked improvement in the nutritional health of children under five.
With an annual cost of only US$5 to $8, the easy-to-use filter operates without electricity, fuel, or daily chemical additives, making it a particularly crucial measure for poor rural households.
These findings were presented today at a seminar titled “Water as Food: How Clean Water Breaks the Malnutrition Cycle in Sindh.” After eight months of use, researchers recorded a 20 percent reduction in wasting, a 12 percent reduction in stunting, and a 7 percent reduction in underweight children.
A key factor in the filter’s success is its exceptional uptake rate. The study, conducted in the flood-affected area of Jhangara, reported an uptake of over 98 percent, with nearly all participating families consistently using the filtered water.
Preliminary results confirm that this simple technology is a powerful and scalable solution that can break the devastating cycle of diarrhea and malnutrition.
Community acceptance has been a major part of its success. “In the context of rural areas where there is no piped water and families fill water daily, this filter works quietly in the background,” explained Dr. Tariq Sameer, co-lead of the study and an assistant professor. He added that communities have “fully accepted it, especially because they do not like the taste of chlorinated water.”
The seminar concluded with a policy panel featuring representatives from the government health department, the Pakistan Council of Research in Water Resources, and WaterAid, who considered the prospects for implementing this technology on a larger scale.
“If this low-cost measure is widely implemented in rural Pakistan, it could lead to a significant reduction in malnutrition, diarrhea, and preventable child deaths,” said Professor Asad Ali, Chair of the Department of Community Health Sciences at AKU.