Articles tagged with Water Supply
A new BU study links sewage overflows to increased risk of acute gastrointestinal illnesses in downstream communities. Residents are at a 62% higher risk of developing AGI within four days after large-volume combined sewer overflows, regardless of drinking water source.
A team of researchers at USC has developed an 'Airborne Sounding Radar for Desert Subsurface Exploration of Aquifers,' nicknamed 'Desert-SEA.' This technique uses low-frequency radar to map the top of shallow aquifers, allowing scientists to assess their sustainability without limitations associated with in-situ mapping. The technology...
A study found that trees along UT's Waller Creek flourish during droughts due to wastewater from leaky city pipes, which also affects tree growth patterns. The research highlights the unintended positive consequences of urbanization on climate-resilience of stream ecosystems.
A new computer model uses improved artificial intelligence to predict snow and water availability more accurately, considering both time and space. This information can help farmers and water planners make better decisions about water allocation.
A new study finds that warming climate is causing a doubling of copper, zinc, and sulfate concentrations in metal sulfide-rich watersheds in Colorado's mountains. The greatest increases are seen at high altitudes, where natural chemical weathering of bedrock is the source of rising acidity and metals.
A new UNSW-led international study reveals that much of the world's global source water contains PFAS levels above recommended drinking water guidelines. In Australia, firefighting foams used in military institutions and fire training facilities are a common source of contamination, with many locations exceeding safe limits.
The Colorado River's water is mostly consumed by agriculture, with over 70% used for irrigation and 32% for cattle feed crops. The river's water budget reveals the need for significant reductions in water use to avoid future shortages.
Virginia Tech researchers have received a five-year National Science Foundation grant to develop an open-source automated forecasting system for lakes. The system will enable real-time data collection and publishing, allowing researchers to predict water quality in lakes around the globe.
Suprina Shrestha, a UT Arlington graduate student, has been awarded the Marie Sklodowska-Curie Fellowship from the International Atomic Energy Agency. The fellowship aims to support women in studying nuclear-related subjects and will provide financial assistance for her research in isotope hydrology.
A new study from Uppsala University found that increased access to water in arid areas can lead to a surge in demand for water and pasture, threatening the livelihoods of nomadic livestock farmers. The research highlights the need for effective management of water infrastructure to ensure climate resilience.
Rice University engineers have developed a hybrid urban water supply system that combines conventional, centralized water sources with reclaimed wastewater to save energy and reduce freshwater use. The system is also more resilient against disruptions such as hurricanes and flooding.
Research reveals that aquifer depletion can curb crop yields even when it appears saturated enough to continue meeting irrigation demands. As groundwater dwindles, agricultural losses escalate, especially for corn and soybean yields.
A 1916 study by Eugene Clyde La Rue estimated the Colorado River discharged just 15 million acre-feet of water, but was ignored in favor of a higher estimate. Today, the river's actual flow is around 13 million acre-feet per year, prompting calls for improved estimates and Indigenous involvement in managing the water.
A Washington State University study reveals that high-elevation snow in the Pacific Northwest is melting earlier due to frequent and intense heatwaves. The researchers found that these heatwaves have doubled in frequency and intensity since the mid-1990s, posing a significant threat to the region's water supply.
Researchers from Xi'an Jiaotong-Liverpool University developed a system to assess water quality challenges in Suzhou, China. The study found that the city's water capacity has increased since 2001 due to effective water management measures.
A new study by researchers at the University of Copenhagen finds that reducing nitrate levels in Danish drinking water could avoid 127 cases of colorectal cancer annually and save $300 million a year. Implementing stricter nitrate limits, such as lowering the maximum standard to 4 mg/L, can result in an additional $138 million saved.
Researchers have found that water temperatures between 20-25 degrees Celsius are at the greatest risk for developing dangerous levels of microcystin, a common algae-produced toxin. Climate change is expected to increase blue-green algae populations, posing serious health hazards and economic risks.
A new study suggests that rebates can offer solutions to California's groundwater woes by incentivizing the collection of stormwater runoff and its infiltration into aquifers. The recharge net metering (ReNeM) program, modeled after rooftop solar metering, helps agencies meet Sustainable Groundwater Management Act requirements.
Researchers have developed a new method to measure the duration and severity of hydrological droughts in streams and rivers, which can persist for up to 3.5 years after drought conditions end. The study found that baseflow droughts are strongly tied to groundwater levels and can impact water management and ecosystem services.
A new solar-powered desalination system can produce drinking water at a lower cost and rate than traditional tap water. The system, developed by MIT engineers and their Chinese collaborators, uses natural sunlight to evaporate seawater, leaving salt behind, and has a higher production rate and rejection rate than previous designs.
Researchers from the University of South Australia have designed a self-sustaining solar-driven system that evaporates seawater to recycle it into freshwater, growing crops without human involvement. The vertical floating sea farm has several advantages over other designs, including low energy consumption and high food production.
A recent study found that social factors are a stronger influence on water-quality violations than median household income. The study's social vulnerability index captured three times as much of the population affected by water-quality issues as median income did.
New research suggests that rising temperatures may offset the impact of increased precipitation on nitrogen runoff, which could lead to reduced aquatic pollution. The study found that warmer temperatures reduce evaporation, allowing more nitrogen to enter waterways, while also affecting microbial life in soil and sediment.
A recent study projects an increase in surface water pollution in Sub-Saharan Africa, posing significant risks to human populations and ecosystem health. The region is expected to become the dominant hotspot of surface water pollution, with potentially catastrophic consequences for communities.
Researchers at the University of California - Riverside have developed a low-cost technology using biochar to remove harmful compounds from reclaimed water, making it safe for agricultural reuse. The biochar-based polishing systems have shown promising results in removing antibiotics and resistant bacteria, potentially reducing the spr...
Researchers are investigating methods to extract critical materials, including lithium for electric vehicle batteries and magnets for electric motors, from diverse water streams. By accelerating evaporation through porous photothermal materials, they aim to reduce energy intensity and improve supply chain security.
Brackish groundwater has the potential to replace fresh water for cooling coal- and natural gas-fired power plants, but treatment can be energy intensive. The study found that retrofitting power plants to use brackish water could nearly eliminate fresh water usage, but increase electricity generation costs by 8-10%.
A new assessment by University of Colorado at Boulder researchers reveals that over 50% of the world's largest lakes are losing water. The study found that climate change and unsustainable human consumption are major contributors to this decline, with many lakes in dry and wet regions experiencing significant losses.
A new study links disproportionate siting of PFAS sources near watersheds serving communities with higher proportions of Black and Hispanic/Latino residents. The research suggests that regulating PFAS releases and ensuring safe drinking water is crucial in protecting public health, particularly in vulnerable communities.
A study of 340,000 service members reveals that exposure to trichloroethylene in water may increase the risk of Parkinson disease. Veterans stationed at Marine Corps Base Camp Lejeune during 1975-1985 had a 70% higher risk of developing the disease.
A recent study identified orthophosphate as a contaminant in some antiscalants that promotes bacterial growth, while HEDP-based antiscalants showed no biofouling effect. The research aims to develop simple low-tech tests for desalination plants to reduce energy consumption and extend membrane lifespan.
Researchers at Northwestern University developed a metal-filtering sponge that can capture and recover critical metals and heavy-metal pollutants from contaminated water. The new sponge successfully removed lead to below detectable levels with one use and recovered over 90% of the ions during subsequent cycles.
A new study by Columbia University Mailman School of Public Health finds that water arsenic levels are associated with higher urinary arsenic among the U.S. population, especially in public water supplies in the West and South regions. The researchers found that private well users and those in public water systems have higher urinary a...
A UC Riverside-led study finds nearly half of domestic well water users in the Central Valley live in disadvantaged communities with high manganese contamination rates. The highest concentrations are found in private, untreated well water systems, posing health risks to fetuses and children.
A new study from the University of Surrey found that Water Safety Plans are not widely used in small drinking supplies in vulnerable rural areas due to a lack of awareness and training. This could put countless lives at risk, as these plans aim to improve the quality of small drinking water supplies.
A recent review study led by UT Austin examines the planet's freshwater supplies and strategies for sustainably managing them. The study emphasizes the importance of recognizing surface water and groundwater as a single resource to ensure future water resilience.
New analyses suggest that climate change alters global precipitation and evaporation patterns, leading to increased sensitivity in river water availability. This study revises forecasting models by incorporating local measurement data from over 9,500 catchments worldwide.
The study examines the impact of climate change and economic sustainability on drinking water management strategies. The integrated assessment framework assesses factors such as water quality, environmental changes, and potential costs to determine performance data and benchmarking.
Researchers discovered 'dhaka' pits that stored surface and ground water for the city, managing a stable supply during dry periods. The ancient civilization's innovative approach to water management may offer valuable lessons for modern societies.
The UN reports that roughly 50,000 large dams worldwide will lose an estimated 23% to 28% of their combined original storage capacity by 2050, resulting in a loss of around 1.65 trillion cubic meters of water. This loss will undermine water security, irrigation, power generation, and other essential services.
Researchers found that riparian buffers can increase stream flow during low-flow events and maintain water levels in areas with high future development. However, the effectiveness of buffers was limited, and they were not enough to mitigate extreme changes in stream flow.
Researchers warn of impending 35-60 year droughts in western US unless greenhouse gas emissions are curbed to limit warming to 2.5 degrees Celsius. Mountain snowpack is shrinking due to global warming, threatening agriculture, ecosystem support, and urban water supplies.
Stanford researchers found that dams could store over 50% of water needed for crop irrigation, but emphasize alternatives like small dams and recharged groundwater systems as more environmentally friendly options. The study aims to increase food security without depleting water stocks or harming nature.
A new study reveals huge gaps in data on how communities use mountain water sources, complicating efforts to model future scenarios. The researchers emphasize the need for improved data and process understanding to guide effective climate change adaptation.
The US beef industry is found to be the least efficient at using virtual water, with a significant amount of blue water needed to produce just one ton of boneless beef. Researchers have developed a model to trace virtual water flows in beef supply chains, revealing major disconnects between consumption and production counties.
A new study by UTA hydrologist Ricardo Sánchez-Murillo has created detailed maps of Tegucigalpa's water sources, charting areas critical to recharge. These maps could help Honduras implement stricter urbanization and agriculture regulations to conserve water and protect vital landscapes.
A new study finds that even a modest temperature increase of 1.5°C will spell serious consequences in India, China, Ethiopia, Ghana, Brazil, and Egypt, with droughts projected to last longer than two years in some countries. Limiting warming to 1.5°C could greatly benefit all six countries, but meeting the Paris Accords is crucial to r...
A study by Duke University found that one in four Flint residents have PTSD, with rates of depression and PTSD three to five times higher than national estimates. The crisis exacerbated existing mental health problems in the predominantly low-income Black community.
Researchers found that models using soil moisture explain 30-120% more year-to-year variation in yield than those relying on rainfall, revealing a critical link between temperature and water supply for crops. Extreme heat is less damaging to crop yields than previously estimated, while drought and flooding sensitivity increases.
A study found that winter storms in north-west India are 31% more frequent and 45% more intense during positive NAO phases, leading to increased moisture and precipitation in the western Himalayas. This could impact crop yields and water security in states like Jammu and Kashmir.
A new study projects significant declines in freshwater storage in parts of Asia, including a near-total collapse for Northern India and Pakistan, due to climate change. The Tibetan Plateau, a critical water source for nearly 2 billion people, is expected to lose nearly 100% of its water availability under a 'business as usual' scenario.
A new study by Pusan National University researchers finds that dry heatwaves mainly occur in northwestern East Asia, while moist heatwaves prevail over southern East Asia. The study predicts more frequent dry heatwaves and longer-lasting moist heatwaves under climate change scenarios.
The Colorado River is facing a critical management crisis due to ongoing megadrought and climate change. Researchers propose policy changes, including Upper Basin consumptive use limitations and Lower Basin reductions, to maintain secure water supplies.
A recent study found that the desert climate has extended 60 miles northward in Central Asia since the 1980s due to rising temperatures and dwindling precipitation. The region's high-altitude areas have seen an increase in precipitation, but this is largely in the form of rain rather than snow.
Climate change is affecting lakes globally, causing changes in stratification regimes, dissolved oxygen levels, and habitat for native fish. Warmer water temperatures can lead to cyanobacterial blooms, reduced oxygen levels, and increased salinity, impacting aquatic organisms and human activities.
A new study reconstructs streamflow data for the Colorado River up to 800 years into the past, revealing an unmatched second-century drought. Compared to current drought levels, this 22-year period had only 68% of average water flow.
A new study reveals that the Asian Water Tower's frozen assets are melting away, with more liquid water in northern endorheic basins and less in southern exorheic basins. This imbalance is expected to pose a challenge to water supply-demand balancing in downstream regions.
Researchers at UC Riverside discover that adding iodide to a water treatment reactor using ultraviolet (UV) light and sulfite can destroy up to 90% of PFAS chemicals in just a few hours. This method accelerates the reaction four times, saving energy and chemicals, and enables the treatment of ten times higher concentrations of PFAS.
Researchers used a supercomputer to simulate water supply in an inter-utility agreement, finding that cooperation can benefit both water supply and financial needs. The study found that more flexible agreements allow utilities to adapt to changing conditions, reducing financial risk.
A new study by University of Nevada, Reno and Desert Research Institute found that three factors – available winter snowfall, snow melt speed, and melting timing – impact critical water supplies. The research team developed a simple framework to help water managers predict timing and amount of streamflow as climate change accelerates.