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Sonia Grego

Associate Research Professor in the Department of Electrical and Computer Engineering
Electrical and Computer Engineering
701 W.Main Street, Durham, NC 27708
701 W.Main Street, Durham, NC 27708

Overview


I am the founding director of the Duke Smart Toilet Lab, dedicated to the opportunities that data-rich human excreta offer to improve individual and public health. The objective  is to empower individuals and groups in communal living with health information for early warning of disease, health and wellness and management of chronic diseases through wastewater analysis, without any changes of daily habits. I am passionate about the opportunities that advanced sanitation technologies offer to improve global health and to provide a paradigm shift in health screening both for individuals and for communities.

As a major project of my research portfolio over the past 5 years, I have led the field testing of 10+ onsite sanitation technology prototypes from multiple organizations in international settings. I have managed yearlong deployments of sophisticated chemo-mechanical systems with electronic monitoring connected to wastewater pipes of buildings, ensuring no disruption of service to users while evaluating the treatment process performance.

Current Appointments & Affiliations


Associate Research Professor in the Department of Electrical and Computer Engineering · 2019 - Present Electrical and Computer Engineering, Pratt School of Engineering

In the News


Published October 25, 2024
Hard-Earned Lessons from Spinning Out a Startup Company from a University
Published September 8, 2023
Making a Cleaner World, One Flush at a Time
Published May 24, 2021
’Smart Toilet’ Uses Artificial Intelligence to Monitor Bowel Health

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Recent Publications


Engineering field testing of non-sewered sanitation systems: Compendium of lessons learned

Book · February 15, 2025 Non-sewered sanitation systems (NSSS) treat human waste where it is generated, eliminating the need to transport it through sewers. They offer exciting opportunities for safely managed sanitation across the globe. Informed by the extensive experience of te ... Full text Cite

Long-term, automated stool monitoring using a novel smart toilet: A feasibility study.

Journal Article Neurogastroenterol Motil · January 2025 BACKGROUND: Patients' report of bowel movement consistency is unreliable. We demonstrate the feasibility of long-term automated stool image data collection using a novel Smart Toilet and evaluate a deterministic computer-vision analytic approach to assess ... Full text Link to item Cite

Women’s toilet use behaviors and water use in a urine diversion squat pan toilet pilot

Journal Article Journal of Water Sanitation and Hygiene for Development · September 1, 2024 Understanding user behavior is critical to the adoption of technology; however, there is a paucity of data related to gender-specific sanitation practices and water-use patterns in toilet use despite the global imperative to increase attention toward the n ... Full text Cite
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Recent Grants


Field Testing in Coimbatore

ResearchPrincipal Investigator · Awarded by Bill and Melinda Gates Foundation · 2019 - 2025

Compendium on lessons from RT Engineering Field Testing

ResearchPrincipal Investigator · Awarded by Bill and Melinda Gates Foundation · 2022 - 2024

COVID Sampler: a wastewater collection technology optimized for pathogen surveillance at the building scale

ResearchPrincipal Investigator · Awarded by North Carolina Biotechnology Center · 2021 - 2022

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Education, Training & Certifications


University of Copenhagen (Denmark) · 1999 Ph.D.
Università di Pisa (Italy) · 1995 M.S.