The CENTER FOR DEVELOPMENT RESEARCH (ZEF) was established in 1995 as an international, interdisciplinary research institute at the University of Bonn. Research and teaching at ZEF address political, economic and ecological development problems. ZEF closely cooperates with national and international partners in research and development organizations. For information, see: www.zef.de.
ZEF -DiscussionPapers on Development Policy are intended to stimulate discussion among researchers, practitioners and policy makers on current and emerging development issues. Each paper has been exposed to an internal discussion within the Center for Development Research (ZEF) and an external review. The papers mostly reflect work in progress. The Editorial Committee of the ZEF -DISCUSSION PAPERS ON DEVELOPMENT POLICY includes Joachim von Braun (Chair), Christian Borgemeister, and Eva Youkhana. Tobias Wünscher is the Managing Editor of the series. Mohammad Monirul Hasan and Nicolas Gerber, The impacts of piped water on water quality, sanitation, hygiene and health in rural households of north-western Bangladesh -a quasi-experimental analysis, ZEF -Discussion Papers on Development Policy No. 217,