Charles Yaw Okyere

Research themes
  • Water resources
  • Health and sanitation
  • Institutions
Research countries
  • Ghana
Research topic
Water Quality in Multipurpose Water Systems, Sanitation, Hygiene and Health Outcomes in Ghana
Research projects

AG-WATSAN Nexus Project

Professional experience

Research Assistant at Institute of Statistical, Social and Economic Research (ISSER) of University of Ghana, Legon from February 2012 to September 2012.


Research Assistant at Institute for Democratic Governance (IDEG), Accra, Ghana from October 2010 to May 2011


Master of Philosophy in Agricultural Economics, 2008-2010, University of Ghana, Legon.

Bachelor of Science in Agriculture Technology, 2003-2007, University for Development Studies, Tamale, Ghana.

Funding institutions

Bill and Melinda Gates Foundation

Dr. Hermann Eiselen Doctoral Programm of the Foundation fiat panis

Thesis title

Water Quality in Multipurpose Water Systems, Sanitation, Hygiene and Health Outcomes in Ghana

Thesis abstract

About 1.8 billion of the world’s population consumes water from highly contaminated sources. Level of fecal contamination of water differs between point-of-source (POS) and point-of-use (POU). Providing water quality information to households is known to improve water, sanitation and hygiene behaviors and reduction of diarrheal diseases. Studies in which water quality information is disseminated to randomly selected households potentially underestimate the impacts, missing the potential learning experiences from household self-water testing and also missing the most effective channels in the delivery of such information to the treatment groups. We conducted water testing experiments in southern Ghana (Greater Accra region) in which students in public basic schools, and adult household members were randomly assigned to receive water testing kits and water quality improvement messages. Selected participants were also trained on the use of water testing kits in testing for E. coli; an indicator bacteria of fecal contamination of water. Baseline orthogonality tests are used to check the similarities and differences between the intervention groups (clustered randomized design). Difference in difference (or comparison of means) estimators are analyzed by gender and type of participants (students vs adult household members). Robustness checks and sensitivity analysis are performed by testing for heterogeneity in treatment effects in order to limit false predictions/estimates. Short-run program effects are estimated for a wide range of outcome variables including water sources, diarrheal diseases, water transportation, and handling and storage techniques, among others. Demand for water testing (measured by participation rate) was high for students’ intervention group compared to adult household members group. Participation rate (used to proxy demand) was slightly higher for females compared to males.

Thesis title

Modeling the Determinants of Farmers’ Decisions on Child Labour and Schooling in the Cocoa Sector of Ghana

Doctoral research funded by

Bill and Melinda Gates Foundation;

Dr. Hermann Eiselen Doctoral Program of the Foundation Fiat Panis

Cooperation partners

Institute of Statistical, Social and Economic Research (ISSER), University of Ghana, Legon

Supervisors of
doctoral work

Prof. Dr. Joachim von Braun

Advisor at ZEF

Dr. Nicolas Gerber


Asenso-Okyere, K., D. B. Sarpong, C. Y. Okyere, A. Mensah-Bonsu and S. Asuming-Brempong. 2013. Modeling the Determinants of Farmers’ Decision on Exclusive Schooling and Child Labor in the Cocoa Sector of Ghana. Global Journal of Human Social Science: Economics, 13(3): 1-10. (Open Access) Further Information
Okyere, C. Y., Y. Yacouba and D. Gilgenbach. 2013. The Problem of Annual Occurrences of Floods in Accra: An Integration of Hydrological, Economic and Political Perspectives. Theoretical and Empirical Researches in Urban Management, 8(2): 45-79. (Open Access) Further Information


Anaman, K. A. and C. Y. Okyere. 2012. Ministry of Food and Agriculture Expenditures and the Output of the Smallholder Non-cocoa Sector in Ghana. Agriculture and Socioeconomic Development of Ghana: Some Policy Issues. Institute for Democratic Governance, Accra, Ghana. 137-150.


Anaman, K. A., K. Impraim and C. Y. Okyere. 2011. The Public Agricultural Budget Analysis Process in Ghana. Institute for Democratic Governance, Accra, Ghana, Briefing Paper: 1-10.

Additionals, Curriculum Vitae
and Downloads

Charles Yaw Okyere

Junior Researcher

okyerecharles(at), s7yaokye(at)