More than a quarter of the world’s population lacks access to safe drinking water. In many countries, the existing water infrastructure provides neither comprehensive sanitation services nor adequate wastewater treatment. With climate change affecting the availability of water and regional ecosystems threatened by polluted wastewater, financing the expansion of water infrastructure is more important than ever. Water service improvements are complex and expensive. IFC works with clients in emerging markets to build innovative, market-oriented, and long-term solutions to water infrastructure challenges.