Investors not only drive innovation through direct investment in new technologies but also by highlighting risk and driving reporting and disclosure within the business community. For example, when companies have to assess risk from climate change and report on these risks it fosters the development and deployment of new technologies and new business opportunities. Just as the Carbon Disclosure Project has encouraged companies to assess their carbon footprint, water disclosure initiatives are now underway. "WaterTec" focuses on the business drivers to address water scarcity. These include physical risk and business disruption, regulatory risk and reputational/brand risk along with innovative technologies such as desalination and water reuse and treatment. The author argues that we are now on the verge of water risk reporting and disclosure accelerating innovation in the water industry. He shows how we are now capturing the true cost of water and this is creating opportunities for investors in the water sector. The text takes the reader through key aspects of emerging innovative technologies along with case studies, legal and intellectual property issues and commercialization. A roadmap of the opportunities in the water sector is presented based on interviews with leading authorities in the water field including innovators, investors, legal, regulatory and marketing experts.