World Vision Switzerland Vasa Water Supply Case｜KATADYN Rapidyn Supports 11 Villages
In Wasa and Lumuli, Uganda, many families, schools, and medical facilities have long relied on rivers, streams, and dams for water, which is also at risk of contamination from agricultural chemicals and microorganisms.
World Vision Switzerland initiated the "Water for Wasa" project, collaborating with KATADYN and local partners to deliver 1,626 sets of Rapidyn gravity-fed water filter systems to 11 villages, ensuring access to safe drinking water directly in homes and public facilities.
Original Case Information
The Challenge
Residents of Wasa and Lumuli primarily sourced water from rivers, streams, and dams. These water sources were susceptible to contamination from upstream activities, agricultural chemicals, and pathogenic microorganisms, leading to diarrhea and gastrointestinal illnesses that affected children's school attendance and family life.
Water supply issues were not limited to homes. 11 primary schools, 2 secondary schools, and 8 healthcare facilities also required reliable drinking water treatment solutions. Therefore, the project needed to address equipment deployment, user education, filter cleaning, and ongoing management, rather than just a one-time donation.
Project Details
World Vision Switzerland planned to distribute Rapidyn systems to 1,500 households and establish public usage configurations for schools and healthcare facilities. Katadyn Products Inc. donated 600 of these systems; local partner Merry Water was responsible for food-grade water storage containers, assembly support, and training.
The project first trained 15 environmental sanitation teachers and one district health officer. These trained individuals then disseminated proper water collection, filtration, cleaning, and hygiene concepts throughout the villages. Each school received 10 filter systems, and school health clubs continuously promoted safe drinking water and hand hygiene.
Rapidyn's installation method was intentionally kept simple. Users only need a food-grade water storage container with an inner diameter of at least 27 cm. Once the ceramic filter element is secured, filtration can be performed using gravity, requiring no electricity or manual pumping.
About the Product
Rapidyn uses a 0.2-micron ceramic filter element, which can reduce bacteria, protozoa, sediment, and suspended particles in water. The original case data positions it as a household water filtration solution that meets the World Health Organization's "Highly Protective" requirements for bacteria and protozoa.
The stated flow rate of a single system is approximately 4 liters per hour; the filter element's lifespan can be up to 20,000 liters, with the actual lifespan depending on raw water quality, cleaning frequency, and operating methods. Clogged ceramic surfaces can be brushed clean to restore flow, making it suitable for areas requiring long-term management where consumable resupply is difficult.
Learn more about the KATADYN Rapidyn Emergency Water Filter
Project Outcome
This project integrated equipment, water containers, training, and local management into a single process. Families can treat drinking water at home, and schools and medical facilities can continuously supply filtered water according to their daily needs, reducing the risk of residents drinking untreated surface water directly.
World Vision's project logic did not end with simply leaving the filters on site. Instead, it ensured that local health workers, teachers, and families understood how the equipment operates. When cleaning and maintenance capabilities reside within the community, the filtration system truly becomes a sustainable basic tool.
Mabu Valley Observation
The value of household water supply solutions lies not only in the filter specifications but also in whether the equipment can be operated, cleaned, and continuously managed by the users themselves.
The Wasa case integrates water filters, food-grade containers, education, and hygiene management, clearly demonstrating how low-energy, low-maintenance equipment can be introduced into villages, schools, and medical facilities.
For temporary post-disaster water supply, remote locations, community disaster preparedness, and group backup in Taiwan, the key application of Rapidyn is similarly to first assess water source risks, number of users, daily demand, container configuration, and maintenance personnel, and then establish a long-term operable water supply process.
Sources
KATADYN Taiwan Case Study:World Vision Switzerland Wasa Water Supply Case Study | KATADYN Rapidyn Supports 11 Villages
