It has been recognised that the world’s failure to provide many of its citizens with access to water and sanitation is an issue of governance, and institutional reforms have been a constant feature in the drive for better sector performance. Reducing corruption is sometimes one of the objectives of decentralisation, privatisation, harmonisation and other reforms, but it is often not considered directly. Since institutional reforms may either reduce or even worsen corruption, it is important to include corruption risk assessments and mitigation measures in planning such interventions.