India's water and enviromental sanitation (WES) programme, strongly supported by UNICEF for nearly three decades, has provided not only services but also long-term training and technical support, especially in the case of water supply. To capture some of the lessons learned, UNICEF commissioned an independent evaluation of its WES programme in India over the past 30 years. This publication explores lessons learned that can help other nations in their efforts to provide universal WES coverage for their citizens.