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Water
Researchers have developed new membranes or micro-filters that will result in clean water in a much more energy efficient manner. The new membranes will supply clean water for use in desalination and water purification applications. The novel membrane technology uses layer-by-layer polymer assembly.
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Water infrastructure
Over the past decades, America’s water infrastructure has deteriorated, lacking the much needed investment to secure and ensure the sustainability of a vital natural resource. An analysis of U.S. infrastructure investment shows that spending on capital improvements to U.S. ports, for example, has averaged $10 billion annually over the last ten years. By 2025, that figure will reach $20 billion annually. In contrast, U.S. capital investments in water supply and wastewater treatment was roughly $2 billion annually over the last decade. It is projected to reach just $3 billion annually by 2025. “Our water infrastructure is in a state of crisis that is only exacerbated by the effects of climate change, growing populations and demand. The longer we ignore the problem, the more it costs us,” said Senator Ben Cardin (D-Maryland).
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Water
California officials are calling on residents better to manage their water usage as the state enters its fourth consecutive year of drought. An average American uses 100 gallons of water each day, and reservoirs in California only have enough water to supply this level of consumption until the end of 2015. In 2014 alone, the state’s agriculture sector lost $2.2 billion in revenue as a result of the drought. State officials acknowledge that a heavy rainfall alone will not be sufficient to restore the groundwater the state needs, so water districts are investing in water recycling plants and exploring strategies ranging from importing water to encouraging greater conservation.
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Water
Studies of water use from 2005 to 2010 show that Utahans used more water for public supply than any other state, despite Utah being ranked the second most arid within the country. Significantly lower levels of Utah snowpack this winter are the biggest climate challenge now facing Salt Lake City: The Northeastern part of the country is inundated with record amounts of snow, but Salt Lake City’s snowpack is 69 percent below the 30-year average.
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Water
Climate change is increasing the demand for desalinated water — by 2025,14 percent of the global population will be forced to use desalinated sea water — as greater evaporation and rising seas further limit freshwater supplies for a growing world population. Current methods to desalinate water, however, come at a very high cost in terms of energy, which means more greenhouse gases and more global warming. Carbon nanotube membranes have the potential to tackle the current and future challenges in water purification.
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Water
About 115 million people — more than one-third of the U.S. population — rely on groundwater for drinking water. As the U.S. population grows, the need for high-quality drinking-water supplies becomes even more urgent. The recently completed USGS’s national summary report of the quality of the Nation’s groundwater is now available online. Nine associated reports (USGS circulars) detail regional-scale assessments of groundwater quality in about thirty of the most heavily used principal aquifers across the United States.
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Water
Currently, water projects in California are partly funded with municipal bonds, some of which must be approved by voters. A new analysis produced by Stanford University’s Water in the West Program provides a blueprint for overhauling the way California funds water infrastructure and innovation projects. The analysis recommends small per-usage fee — known as a public goods charge (PGC) — as appropriate way to pay for proper management of resources.
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Water
High concentrations of dissolved iron from abandoned coal mines in Pennsylvania have been contaminating some of the Pennsylvania’s streams and rivers for many years, potentially affecting aquatic habitats and drinking water for millions of residents. To combat this problem, a team of Penn State researchers has proposed a method to eliminate much of the iron before it reaches the waterways.
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Droughts
Study warns of unprecedented risk of drought in twenty-first century. Today, eleven of the past fourteen years have been drought years in much of the American West, including California, Nevada, New Mexico, and Arizona and across the Southern Plains to Texas and Oklahoma. The current drought directly affects more than sixty-four million people in the Southwest and Southern Plains, and many more are indirectly affected because of the impacts on agricultural regions. A new study predicts that during the second half of the twenty-first century, the U.S. Southwest and Great Plains will face persistent drought worse than anything seen in times ancient or modern, with the drying conditions “driven primarily” by human-induced global warming.
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Water & superbug
The fight against antibiotic-resistant bacteria — so-called “superbugs” — is a huge challenge, one that the World Health Organization has described as a grave global problem. The problem of antibiotic resistance is being exacerbated worldwide by the pollution of waste water with leftover drugs, providing breeding grounds for resistant bacteria and their genes. The problem can persist for years, constantly refreshed by new discharges of both drugs and of resistant bacteria themselves, shed by people and animals. It is time for the health and water industries to strike a bargain. Health professionals need to be aware of the need for pharmaceuticals to be managed as organic and persistent pollutants. Tackling hot spots in “source control” such as hospitals and clinics could make significant inroads on the amount of waste drugs entering treatment plants. The water industry should ensure that treatment plants are operating under optimal conditions and that the older ones are either replaced or upgraded.
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Water
Naturally occurring arsenic in private wells threatens people in many U.S. states and parts of Canada, according to new studies. The studies, focused mainly on New England but applicable elsewhere, say private wells present continuing risks due to almost nonexistent regulation in most states, homeowner inaction, and inadequate mitigation measures. The reports also shed new light on the geologic mechanisms behind the contamination. The studies come amid new evidence that even low doses of arsenic may reduce IQ in children, in addition to well documented risks of heart disease, cancer, and reduced lung function.
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Water
A new technology offers a positive environmental impact by slowing the evaporation of water from bodies of water such as mining tailings ponds and reservoirs, while simultaneously generating solar energy. The invention, called Hexocover, consists of floating hexagonal plastic panels that sandwich 4-inch balls linked together to form a cover to prevent evaporation. The panel design addresses the need for mobility through the inclusion of a propulsion system as well as GPS, so the panels can be built to be remotely configurable. Further, when configured with solar cells, the panels can generate electricity.
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Water
New research paints a grim picture for the future of China’s water supply, as its booming economy continues to heap pressure on its natural resources. The study determined that water stress is only partially mitigated by China’s current two-pronged approach: physical water transfers to water-depleted regions, including the major South-North water transfer projects, or the “virtual” water embodied in traded products between regions and countries.
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Critical infrastructure
On 3 July 2014, DHS, responding to a Freedom of Information Act(FOIA) request on Operation Aurora, a malware attack on Google, instead released more than 800 pages of documents related to the Aurora Project, a 2007 research effort led by Idaho National Laboratoryto show the cyber vulnerabilities of U.S. power and water systems, including electrical generators and water pumps. The research project found that once these infrastructure systems are infiltrated, a cyberattack can remotely control key circuit breakers, thereby throwing a machine’s rotating parts out of synchronization and causing parts of the system to break down.
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Water
A 7-year pilot project in the 12,000-acre Pleasant Valley subwatershed of the Pecatonica River in southwestern Wisconsin has helped to reduce the amount of phosphorus and sediment entering the river after major storms by more than a third. The project involved changing practices on just ten of the valley’s sixty-one farms. Certain practices, such as reducing tillage and planting crops that leave more residue to protect the soil, caused the estimated annual amounts of phosphorus and sediment entering the river to drop by 4,400 pounds and 1,300 tons, respectively.
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California water
Eighty-eight percent of Los Angeles’s water comes from the Colorado River, Owens Valley, and the Sacramento-San Joaquin River Delta, passing through three major aqueducts and into the region. The aqueducts cross the San Andreas Fault a total of thirty-two times, making them vulnerable to the much anticipated Big One.A large temblor on the fault could destroy sections of the aqueducts, cutting off the water supply for more than twenty-two million people in Southern California.
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California water
Since 2011, the Sacramento and San Joaquin river basins decreased in volume by four trillion gallons of water each year (fifteen cubic kilometers). This is more water than California’s thirty-eight million residents use each year for domestic and municipal purposes. About two-thirds of the loss is due to depletion of groundwater beneath California’s Central Valley. It will take about eleven trillion gallons of water (forty-two cubic kilometers) — around 1.5 times the maximum volume of the largest U.S. reservoir — to recover from California’s continuing drought, according to a new analysis of NASA satellite data.
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Water
The Roman Empire, stretching over three continents and persisting for many centuries, was home to an estimated seventy million people. In such a vast area ensuring a stable food supply was no easy task, particularly given the variable and arid climate of the Mediterranean region. Smart agricultural practices and an extensive grain-trade network enabled the Romans to thrive in the water-limited environment of the Mediterranean, a new study shows. The stable food supply brought about by these measures, however, promoted population growth and urbanization, pushing the Empire closer to the limits of its food resources.
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Infrastructure
Between 30 and 50 percent of Europe’s drinking water are being lost every year due to pipe leakages. Norwegian researchers have developed an inspection methodology for water distribution grids. A long, torpedo-like and propeller-driven robot is guided through the water and district heating pipe systems. It is equipped with sixty-four large ultrasound transducers which transmit and receive ultrasound signals. It collects data which enable us calculate the thickness of, and levels of corrosion in, the pipes.
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Water
The California State Water Resources Control Board (SWRCB) is currently reviewing a plan to arrest the deterioration of the Salton Sea, a shallow, saline lake which runs along the state’s Imperial and Coachella valleys above the San Andreas Fault. The Salton Sea was inadvertently created by engineers with the California Development Company when they cut off a series of canals in an effort to manage river flooding between 1904 to 1906. It has since been a popular vacation destination.
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More headlines
The long view
Water Is the Other U.S.-Mexico Border Crisis, and the Supply Crunch Is Getting Worse
The United States and Mexico are aware of the political and economic importance of the border region. But if water scarcity worsens, it could supplant other border priorities. The two countries should recognize that conditions are deteriorating and update the existing cross-border governance regime so that it reflects today’s new water realities.