• Water

    Arsenic is now recognized to be one of the world’s greatest environmental hazards, threatening the lives of several hundred million people. Naturally occurring arsenic leaches into water from surrounding rocks and once in the water supply it is both toxic and carcinogenic to anyone drinking it. New research finds that most of the current technologies used around the world to reduce arsenic contamination are ineffective.

  • Food security

    New study shows increasing crop water productivity could feed an additional 110 million people while meeting the domestic water demands of nearly 1.4 billion.

  • Water

    A conference of 500 leading water scientists from around the world, held last week in Bonn, issued a stark warning that, without major reforms, “in the short span of one or two generations, the majority of the nine billion people on Earth will be living under the handicap of severe pressure on fresh water, an absolutely essential natural resource for which there is no substitute. This handicap will be self-inflicted and is, we believe, entirely avoidable.”

  • Water

    Engineers develop an innovative method designed to purify water through the rapid removal of oily pollutants. The technology involves the deployment of surface engineered silica particles, which act as oil magnets in water, adsorbing oil, yet repelling water.

  • Water infrastructure

    The U.S. water infrastructure is often called the “invisible infrastructure” – a vast, largely invisible network of pipes and tunnels — nearly 1.4 million miles span across the United States, which is eight times the length of the U.S. highway system. Much of the U.S. infrastructure was built more than a century ago, and currently around 10 percent of these systems are at the end of their service life. If not addressed by 2020, this number could rise to 44 percent. A summit meeting of the U.S. water community calls on Congress to make water infrastructure a top national priority.

  • Water infrastructure

    The U.S. Interior Department issued released a report to Congress on the progress of the National Water Census. As competition for water grows — for irrigation of crops, for use by cities and communities, for energy production, and for the environment — the need for the National Water Census and related information and tools to aid water resource managers also grows. The Water Census will assist water and resource managers in understanding and quantifying water supply and demand, and will support more sustainable management of water resources.

  • Food security

    After virtually eliminating arsenic as a useful tool for homicide, science now faces challenges in doing the same for natural sources of this fabled old “inheritance powder” that contaminates water supplies and food, threatening more than thirty-five million people worldwide.

  • Water

    The Ozone Upgrade and Expansion Project of the Alvarado Water Treatment Plant in San Diego, California, was named the winner of the American Society of Civil Engineers (ASCE) 2013 Outstanding Civil Engineering Achievement (OCEA) Award. In addition to expanding plant capacity by 67 percent, the city of San Diego converted from chlorine to ozone disinfection. The incorporation of ozone enabled the city to provide not only safer water with lower levels of carcinogenic disinfection by-products, but also water that is odorless and better tasting.

  • Water

    A filtration system based on a medicinal herb can quickly and easily remove “fluoride” from drinking water, say researchers in India. The technology uses parts of the plant Tridax procumbens as a biocarbon filter for the ion.

  • Water

    How can Arizona secure a safe, sustainable water supply for its current and future residents? The University of Arizona Water Resources Research Center will take on this complex issue at its annual conference on 5 March.

  • Water

    Canadian agriculture is faced with great opportunities, but also challenged by water — related risks and uncertainties. An expert panel convened by the Council of Canadian Academies has found that water and land resources in Canada can be more sustainably managed by developing forward — thinking policies and effective land and water management strategies, adopting effective governance mechanisms, and harnessing technological advancements.

  • Water wars

    Lawmakers in Georgia are renewing efforts to claim Georgia’s right to tap into the Tennessee River’s  water supply. The lawmakers hope to achieve this by raising questions about the exact demarcation of the border between the two states.

  • Water

    The amount of water available for people and ecosystems is the amount of annual precipitation — that is, snow or rain — minus the amount of annual evapotranspiration.  Evapotranspiration itself is the amount of water lost to the atmosphere from the ground surface. Scientists map the long-term U.S. evapotranspiration rates for the first time.

  • Water

    Agriculture is one of the world’s most insatiable consumers of water. Yet, it is facing growing competition for water from cities, industry, and recreation at a time when demand for food is rising, and water is expected to become increasingly scarce.

  • Water

    The University of Alberta will unveil new technologies its researchers and students will use to replace inadequate water purification and monitoring equipment in remote communities in Canada and India.

  • Water

    While many people recognize that clean water and air are signs of a healthy ecosystem, most do not realize that a critical part of the environment is right beneath their feet. The ground plays an important role in maintaining a clean environment by serving as a natural water filtration and purification system.

  • Water

    Despite these advances made under the Clean Water Act, sewage remains a major source of pharmaceuticals and personal care products (PPCPs) and naturally occurring hormones found in the environment. New research shows the effectiveness of rural lagoon systems at removing these compounds from wastewater.

  • Water

    A new study using data from a pair of gravity-measuring NASA satellites finds that large parts of the arid Middle East region lost freshwater reserves rapidly during the past decade. Scientists found during a seven-year period beginning in 2003 that parts of Turkey, Syria, Iraq, and Iran along the Tigris and Euphrates river basins lost 117 million acre feet (144 cubic kilometers) of total stored freshwater. That is almost the amount of water in the Dead Sea. The researchers attribute about 60 percent of the loss to pumping of groundwater from underground reservoirs.

  • Water

    Australian homes, towns, cities, farmers, and miners will rely increasingly on underground water as the country’s population grows, surface water supplies dwindle, and as droughts multiply under a warming climate. Trouble is, the authorities in charge do not have a clear idea exactly how much groundwater there is, how rapidly it is recharged — or how quickly it is being depleted. What is known is based on data largely supplied by 23,000 monitoring bores spread across the continent — more than two thirds of which are now falling into disrepair.

  • Food security

    Droughts can severely limit crop growth, causing yearly losses of around $8 billion in the United States. It may be possible, however, to minimize those losses if farmers can synchronize the growth of crops with periods of time when drought is less likely to occur. Researchers are working to create a reliable “calendar” of seasonal drought patterns that could help farmers optimize crop production by avoiding days prone to drought.