Water, wastewater, and energy infrastructure are intricately interdependent. Water and wastewater systems depend on electrical power to function, and many electrical generators depend on water for cooling in ways that may not be sustainable in a changing climate. Energy production also places substantial burdens on aquatic biomes. Pollutants from fossil-fuel burning electric plants pollute our surface water bodies, mining activities choke mountain streams, and the production of biofuels from irrigated farmland threatens to fundamentally reshape water budgets in some countries. Through our research and magazine, the JHU Global Water Program takes a look at the tradeoffs and synergies between water supply and energy production.