The world’s groundwater aquifers are taking a beating. Decades of unrestrained pumping by thirsty farms and fast-growing cities have drained these underground rock beds, which hold more than 95 percent of the planet’s drinkable water. New research shows how to protect the aquifers that hold most of the world’s fresh water.

Houston’s water and wastewater system could be more resilient with the development of hybrid urban water supply systems that combine conventional, centralized water sources with reclaimed wastewater. Reclaimed wastewater could make supply systems more resilient.

Engineers have refined a model that not only cultivates green energy, but also desalinates ocean water for large, drought-stricken coastal populations.By pumping seawater to a mountaintop reservoir and then employing gravity to send the salty water down to a co-located hydropower plant and a reverse osmosis desalination facility, science can satisfy the energy and hydration needs of coastal cities with one system.

Global water resources are stretched by climate change and human population growth, and farms and cities are increasingly turning to groundwater to fill their needs. Unfortunately, the pumping of groundwater can cause the ground surface above to sink. A new study maps, for the first time, the permanent loss of aquifer storage capacity occurring globally.

A looming depletion of groundwater across the U.S. has drawn nationwide attention in recent years, as local officials in states from Kansas to Arizona struggle to manage dwindling water resources even as homes and farms get thirstier. With little fanfare, the administration is using infrastructure funding to revive dormant plans for pipelines and reservoirs in rural areas across the U.S. West.

Political leaders in the Mississippi River area are looking to form a multistate compact to manage threats from climate change, water pollution and drought-affected regions elsewhere. Twenty million people drink from the Mississippi River and its tributaries every day, and the river has led to more than 350,000 jobs and generates more than $21 billion in annual tourism, fishing and recreation spending.

Increased demand for water due to global population growth, coupled with the increasing frequency of extreme weather events, endangers our water security. Nonetheless, little is known about the relationship of water use by sectors and the occurrence of drought-heatwave events, particularly at the large scale.

Researchers are developing advanced automation techniques for desalination and water treatment plants, enabling them to save while providing affordable drinking water to small, parched communities without high-quality water supplies.

As rural Arizonans face the prospect of wells running dry, foreign firms are sucking up vast amounts of the state’s groundwater to grow hay for Saudi Arabia and other wealthy nations. The state’s retirement system invested heavily in a private land deal that allowed a foreign company to effectively ship Arizona’s scarce water supply overseas.