WPI’s Institute of Science and Technology for Development (InSTeD) Receives Nearly $900,000 for Work with Global Partners to Co-Create Sustainable Sanitation, Education, and Economic Initiatives in Ethiopia

InSTeD's new Stephen J. Mecca Lab for Sustainable Development at WPI is working to design and implement WPI MicroFlush toilets, increase sanitation and hygiene services, and create new educational and economic opportunities
July 25, 2022

Here in the U.S., many of us take clean, working toilets for granted, but in some parts of the world, easy access to such basic sanitation supplies and services is much harder—if not near impossible—to find.  For example, according to UNICEF, more than 70% of the population in Eastern and Southern Africa - approximately 340 million people—have little to no access to soap and water for hand washing or facilities for the safe disposal of human waste. The impacts of such shortfalls are profound; the World Health Organization notes that such basic sanitation services not only reduce the risk of disease and the impact of malnutrition, but also promote dignity and safety, and even boost school attendance.

To help address this considerable challenge, WPI students, researchers, and their partners are working to bring more adequate and dignified sanitation to Ethiopia at a reasonable cost. Through a five-year, $900,000 grant awarded by the Bureau of Humanitarian Assistance at the United States Agency for International Development and by Catholic Relief Services work is now underway to create a sustainable educational experience, improve the design, and implement WPI MicroFlush toilets—sustainable compost toilets that use handwashing water to flush.

The WPI MicroFlush toilets use a “pour flush” model in which water from the attached sink flushes the toilet when a user washes their hands—saving water while keeping the toilets off the grid, hygienic, and odor-free. The toilets accomplish these surprising feats with two key components—the MicroFlush valve, and earthworms, which can digest and process waste, and through that process simultaneously create valuable compost and fertilizer for farms and gardens in the area.



The sanitation project is part of the new Stephen J. Mecca Lab for Sustainable Development at WPI, which is part of WPI’s Institute for Science and Technology for Development (InSTeD). Mecca was a professor at Providence College who invented the technology that will be used in the toilets. The Mecca Lab brings together researchers from different disciplines and departments at WPI and other institutions, including the director of the lab, Terrence McGoldrick, a Providence College professor and WPI-affiliated researcher.


If we succeed in moving the needle even a little bit on such a large problem in the world, it’s going to make a big difference in people’s lives.
  • Terrence McGoldrick
  • Providence College Professor and WPI-affiliated Researcher

“The mission of this project is not only to increase access to sanitation and hygiene services, but also to create new educational and economic opportunities for people in the region, empowering them and increasing the project’s impact,” says McGoldrick. “If we succeed in moving the needle even a little bit on such a large problem in the world, it’s going to make a big difference in people’s lives.”  

To simultaneously create educational and economic pathways, the team will partner with vocational technical schools in Ethiopia. Through an educational program to build and maintain the toilets, pathways will be established for people to form small businesses centered around the implementation of the toilets.

The really exciting part of the project is the partnership with the local community, which is designed to last well beyond the completion of the team’s work.
  • Rob Krueger
  • Director of InSTeD and Head of Social Science & Policy Studies

“The really exciting part of the project is the partnership with the local community, which is designed to last well beyond the completion of the team’s work,” says Rob Krueger, founder and director of InSTeD and head of Social Science & Policy Studies at WPI. “The ultimate goal of the work is not just to design and build the toilets, but also to train people in Ethiopia to become maker agents—people who can start their own businesses and disseminate the knowledge and expertise they’ve gained to others.”


The program contains three learning modules: first, the technical aspects of the toilets, second, business development and micro-finance, and third, logistics, including how to maintain supply chains. Participants may leave after the completion of each module and receive a certificate for that module, or they may continue and stay for two, or all three modules. Those who participate will also receive a stipend for the duration of the time they are in the program, which runs up to a year and a half.

Aaron Sakulich, associate professor of Civil, Environmental & Architectural Engineering at WPI, is the senior technical advisor for the project and is overseeing some of the technical aspects of the toilets. He and Krueger will be directing a Major Qualifying Project (MQP) team in the fall of 2022 to refine the materials, which include a slab of porous concrete. All students must complete an MQP—a team-based, professional-level design or research experience in their field of study, usually undertaken in senior year. All WPI students must also complete an Interactive Qualifying Project (IQP), usually in their junior year, through which they work in teams of others outside their major to solve an issue that relates science, technology, or engineering to society.

“This project really speaks to the heart of the MQP and IQP programs. We can’t just hear about a problem and then drop the solution on people. Our local partners who are dealing with the problem every day must have input, and that is exactly what is happening here says Sakulich. The main local partners will be the Government of Ethiopia and the Harar Catholic Secretariat (HCS). HCS has 1,000 people working in the region who will be the team’s partners on the ground.

Ethiopia may only be the beginning for the Mecca Lab team. They also have plans to bring the WPI MicroFlush toilet technology to other countries in the area, as well as to sub-Saharan Africa, Latin America, and the Caribbean islands.

Experts in this Story

Robert Krueger
Robert Krueger
Professor & Department Head of Social Science and Policy Studies, Social Science & Policy Studies

Robert Krueger is a human geographer whose scholarship and teaching focus on creating sustainable, socially just, improvements to development projects in the global north and south. His work has taken him around the world. He has worked in countries in North America, Europe, Asia, and Africa, on issues of economic development and institutional change. His scholarship and teaching challenge conventional notions of economic development, economy-environment relationships, and social change.

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Aaron Sakulich
Aaron Sakulich

Replacing our crumbling national infrastructure with conventional materials would be only a temporary solution to a critical problem. My research focuses on developing new, more durable materials for use in infrastructure, which will lead to a lowered maintenance burden, improved user safety, and a reduced environmental impact. Personally, the part that I like most about this subject is the chemistry.

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