The Aquaya team combines experience in applied research, technology development, and business management.


Ranjiv Khush

Co-founder and Executive Director

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Ranjiv guides Aquaya’s development as a leading research and consulting organization dedicated to effective water quality management in developing countries. Ranjiv brings a science and technology focused approach to Aquaya that builds on extensive basic research and policy experience. Ranjiv co-founded Aquaya in 2005 following a Fellowship with the Office of the Science and Technology Advisor to the U.S. Secretary of State. Previously he was a research scientist at Stanford University and the Centre National de Recherché Scientifique in Paris, France.

Ranjiv holds a PhD degree from the University of California, Santa Cruz and MS and BS degrees from the University of California, Davis.


Zarah Rahman

Director of Programs

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Zarah directs Aquaya’s research and consulting activities. She leads program teams through the development of proposals, the identification and recruitment of institutional partners, and the implementation of projects. Prior to joining Aquaya, Zarah was a Henry Luce Scholar and researcher with the Hanoi School of Public Health and the Clinton Foundation in Vietnam. Zarah also conducted resource conservation documentation and research in Indonesia as a National Geographic Expeditions Council and Seven Fund grant recipient.

Zarah holds a BA degree, magna cum laude, in Development Studies from Brown University.



Bradley Lang

Bradley Lang

Director of Operations

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Brad maintains oversight of Aquaya’s operations and finances in both San Francisco and Nairobi. He also provides strategic guidance for Aquaya’s business development programs. Brad’s international project management experience includes three years of small enterprise development with the Peace Corps in Kenya. Brad has also worked for the Steamboat Ski and Resort Corporation and with McConnell International, a technology policy consulting firm based in Washington, DC.

Brad holds a BA degree, magna cum laude, in Political Science from The George Washington University, and an MBA degree from the Tuck School of Business at Dartmouth College.




Lola Aleru

Lola Aleru

Program Manager

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Lola manages Aquaya efforts to evaluate and promote effective water quality monitoring and management among water suppliers and public health surveillance agencies across Sub-Saharan Africa. Lola’s previous work includes program management at the Exploratorium, a museum of science, art, and human perception, and with SACNAS, a society of scientists dedicated to fostering academic success among minority students.

Lola holds a BA degree in Business Management Economics from University of California, Santa Cruz.


Mateyo Bonham

Mateyo Bonham

Program Associate

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Mateyo focuses on the implementation of Aquaya’s programs on water quality monitoring and management. Before joining Aquaya, Mateyo worked with John Snow, Inc. and local government partners in Zambia to strengthen HIV/AIDS commodity supply chains.  Mateyo has also conducted water supply, sanitation and hygiene research in Honduras and served with the Peace Corps in Zambia.

Mateyo holds an MPH degree from The George Washington University and a BS degree in Zoology from Miami University.


Rachel Peletz

Research Associate

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Rachel studies policies and practices that promote effective water quality monitoring and management. Previously, Rachel was a Research Fellow and Doctoral student at the London School of Hygiene and Tropical Medicine. She has also worked as an International Technical Advisor for the Centre for Affordable Water and Sanitation Technology (CAWST) in Canada and studied ecological sanitation in India, ceramic filters in Ghana, and ultra-violet water disinfection in Haiti.

Rachel holds a PhD degree from the London School of Tropical Medicine and Hygiene, a Masters of Engineering degree from the Massachusetts Institute of Technology (MIT) and a BS degree in Environmental Engineering from the University of California, Berkeley.



Kevin Clawson

Kevin Clawson

Research Assistant

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Kevin researches the water and sanitation sector of Sub-Saharan Africa by collecting data and documenting the progress of water suppliers, surveillance and political agencies. Kevin previously interned with Plant Construction, a project management firm in San Francisco and Carona Engineers in Oakland.

Kevin holds hold a BS degree in Civil Engineering from Gonzaga University.



Jeff Albert

Jeff Albert | Affiliated Expert

Co-founder, Aquaya

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Jeff has worked in the water field for 15 years, on issues that include water reclamation and efficiency in irrigated agriculture, hydrologic cycle aspects of climate change, water treatment in low-resource settings, and the uptake of household water treatment. Jeff co-founded Aquaya in 2005 following a Fellowship with the Office of the Global Change Research Program the U.S. Environmental Protection Agency, where he was awarded a Bronze Medal for his work on drinking water in response to the 2004 Indian Ocean Tsunami. From 2002 to 2004, he held a joint faculty appointment with the Center for Environmental Studies and the Department of Geological Sciences at Brown University. He was also a Visiting Scholar at Brown’s Watson Institute of International Studies during that time.

Jeff holds a PhD degree from Yale University and a BS degree from Brown University.



Salim Haji

Salim Haji | Affiliated Expert

Principal, Sierranna Partners

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Since March 2005, Salim has been an independent management consultant. Prior to becoming an independent consultant, he was Senior Vice President of Strategy at MacDermid, a ~$700M global specialty chemical company based in Denver, CO. Prior to joining MacDermid in 2003, Salim was a Vice-President and Partner at Oliver Wyman (formerly SPA), a leading strategy consultancy with over 2,500 consultants in 40 offices around the world. In 2007 Salim also founded Distributors Solutions LLC (“DSI”) to serve as a co-op purchasing organization for the ~500 independently owned and operated distributors of MillerCoors brands around the country. Between his time at Oliver Wyman and MacDermid, Salim spent a year as a Visiting Fulbright Professor at a business school in Tanzania (East Africa), where he lectured on Corporate Strategy and Economics.

Salim holds an MBA from Stanford University and a BA degree, magna cum laude, in Economics and Development Studies from Brown University, where he was elected to Phi Beta Kappa.



Steuart Arboleda

Steuart Arboleda

Bookkeeping Intern

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Steuart assists with Aquaya’s bookkeeping, financial reporting, and office administration. Steuart has volunteered with many other non-profits in San Francisco, including St. Anthony’s Dining Hall and Opportunity Impact. In addition to Aquaya, Steuart works in event administration at the Special Events Department in the Development Office at University of San Francisco.

Steuart is a junior at the University of San Francisco pursuing a degree in Business Administration with a degree in Accounting and Finance.



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