The world-wide need for more usable water is a critical issue in environmental sustainability. Current water technologies are not effectively delivering the quantity of low-cost, energy-efficient, clean water needed. In this panel discussion, experts discuss why there are so few investments in water, where the opportunities lie for entrepreneurs and information technology, and what cleantech startups need to know about this sector. This program is edited from an MIT/Stanford Venture Lab event entitled “Blue Tech: Is Water’s Dry Spell Over?”