Faced with worsening water security across the globe, companies and investors are increasingly concerned about the water risks faced by their operations, supply chains and investments – and looking for tools to help to assess these risks. New report details similarities and differences between three leading water tools.

Agriculture, which accounts for 90 percent of global water use, is the largest driver of water scarcity worldwide, and it is often the most vulnerable and disadvantaged populations that suffer the severest consequences. A new study suggests that there is enough locally available water to expand irrigation over 140 million hectares of agricultural lands.

Loss of groundwater may accelerate drying trends in the eastern United States, according to research that applied supercomputing to create an in-depth model of how groundwater will respond to warming. Even under modest climate warming scenarios, the continental United States faces a significant loss of groundwater – about 119 million cubic meters, or roughly enough to fill Lake Powell four times or one quarter of Lake Erie.

More than 20 percent of the world’s population are dependent on karst groundwater. In these regions, large amounts of water seep into the porous rock and are available at great depths only. Moreover, karst water is susceptible to pollution. Use for sustainable water supply is a challenge in threshold and developing countries.

As climate changes, plants in North America, much of Eurasia, and parts of central and South America will consume more water than they do now, leading to less water for people, according to a new study. The research suggests a drier future despite anticipated increases in precipitation in populous parts of the United States and Europe that already face water stresses.

The National Alliance for Water Innovation (NAWI), which is led by the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab), has been awarded a five-year, $100-million Energy-Water Desalination Hub by DOE (pending appropriations) to address water security issues in the United States.

Florida has the largest concentration of freshwater springs in the world, but they are being devastated by increasing pollution and drastic declines in water flow. Some springs have dried up from overextraction; others have shown signs of saltwater intrusion and harmful algae blooms. The answer to this problem is simple: No more extraction permits should be granted, and existing permits should be reduced with the goal of eliminating bottled water production entirely in Florida. But that simple solution is not being implemented. In the next few months, Nestlé, the largest bottled-water company in the world, is set to renew its permit at Ginnie Springs, one of the most popular recreational attractions along the Santa Fe River,” Sainato and Skojec write. “The permit allows Nestlé to take one million gallons per day at no cost, with just a one-time $115 application fee.”

An experiment with a water-saving “smart” faucet shows potential for reducing water use. The catch? Unbeknownst to study participants, the faucet’s smarts came from its human controller. “We looked at the faucet because that’s where a lot of water usage in the home occurs, but when you compare your sink to other products in the house – a thermostat or refrigerator – you see that there haven’t been updates to how the sink works in a very long time,” says one researcher.

Plastics in our waste streams are breaking down into tiny particles, causing potentially catastrophic consequences for human health and our aquatic systems. Approximately 300 million tons of plastic are produced globally each year and up to 13 million tons of that is released into rivers and oceans, contributing to approximately 250 million tons of plastic by 2025. Since plastic materials are not generally degradable through weathering or ageing, this accumulation of plastic pollution in the aquatic environment creates a major health concern.