The provision of water supply, sanitation and wastewater services generates substantial benefits for public health, the economy and the environment. Benefit-to-cost ratios can be as high as 7 to 1 for basic water and sanitation services in developing countries. Wastewater treatment...

This report draws on the water management chapters of 42 country reviews carried out to date to identify common achievements and remaining challenges for OECD countries in terms of further reducing the pollution burden and protecting human health and aquatic ecosystems. Conclusions are drawn...