Articles tagged with Water Quality
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A team from Colorado State University has created a novel dataset, AquaSat, by merging large public datasets of water quality observations with satellite imagery. This 'symphony of data' provides over 6 million water quality observations, unlocking powerful new applications in remote sensing of water quality. The study aims to improve ...
Researchers at UC Santa Barbara have developed integrated pest management strategies to combat aquatic invasive species, such as quagga and zebra mussels, in California's waterways. The studies focus on using biological control methods, like sunfish, to target early life stages of these pests, reducing harm to people and the environment.
The annual Chesapeake Bay Dead Zone Report Card shows hypoxia in 2019 was within the normal range despite record river flow and light winds. This suggests that nutrient reductions since the 1980s have successfully improved water quality, with the dead zone lasting longer than in recent years.
The NUS team developed a portable, easy-to-use, and low-cost device that can detect toxin-producing algae in water within 15 minutes. The system uses a smartphone and generates real-time results, enabling quick and convenient water quality monitoring.
The UCLA report grades Los Angeles County's water systems, assigning a C+ mark overall due to poor groundwater and surface water quality grades. However, expected funding for stormwater capture projects is seen as a positive step towards improvement.
Researchers investigating the effects of dam removal on water quality and nutrient processing in streams and rivers. Removing antiquated dams may harm or help water quality depending on the scenario. The study aims to identify hotspots of nitrogen processing and develop a new model for stream and riparian processes.
A team of researchers from the University of Delaware examined the age, origin, and sustainability of fossil aquifers in the Mega Aquifer System (MAS) in the Arabian Peninsula. They used a combination of geochemical analysis, satellite data, and field investigations to determine the quality and age of the water.
A new tool, HWISE Scale, measures household water insecurity in low- and middle-income countries. It provides actionable information to address the global water crisis, strongly associated with food insecurity, stress, and economic productivity.
A study found that water contamination violations associated with immediate health risks led to a 14% increase in bottled water sales. However, low-income rural communities did not show a significant response to nitrate violations, which pose a risk to infants.
The UMD CONSERVE Center develops safe, alternative irrigation strategies to sustain food production in a changing climate. Non-traditional water sources like reclaimed water, brackish water, and return flows hold promise, but require additional treatments to reduce microbial and chemical contaminants.
Historical phosphorus sources contribute to persistent nutrient pollution in rivers, masking efforts to improve surface water quality. The study highlights the need for long-term accounting of total historical phosphorus storage and reductions in contemporary surpluses.
A new study estimates that toxic chemicals in tap water could cause more than 100,000 cancer cases nationwide. The Environmental Working Group analyzed 48,363 community water systems and found increased cancer risk due to contaminants such as arsenic and radioactive elements.
Despite increasing public and private resources for aquatic ecosystems, decades of watershed restoration projects have had mostly perceived impacts with relatively undocumented or missing data. Researchers suggest setting stricter monitoring standards and partnering with conservation groups to improve water quality measurement.
A new study by University of Illinois researchers suggests that Chicago's water pollution is likely keeping invasive silver carp out of the Great Lakes. The study found that certain compounds in the water flowing downstream from Chicago induce avoidance behaviors in fish, causing them to stop moving upstream.
Paul Westerhoff, an ASU Regents Professor, has been awarded the 2019 Clarke Prize for his contributions to water science and technology. He will receive a medal and a $50,000 prize, recognizing his work on nanomaterials and machine learning in solving global water problems.
Researchers at IST Austria developed a new method to produce realistic water wave animations, now possible without sacrificing computational efficiency. The technique, which models wave-surface interactions, enables detailed scenes such as ripples forming around islands or boats passing by.
A new study by UC Santa Barbara Bren School professor Arturo Keller links reforestation to significant benefits in water quality. Reforestation of marginal croplands can reduce nutrient loading, biodiversity, and sediments in streams and rivers.
Researchers developed a portable technology to detect four common types of cyanotoxins, including microcystin-LR and cylindrospermopsin, which meet EPA's recreational water quality criteria. The device can be used to assess recreational water quality but not yet viable for drinking water safety.
The University of Texas at San Antonio is working on three water sustainability projects in San Antonio. The projects aim to improve rain infiltration, manage water runoff, filter toxic pollutants and mitigate inner city flooding using permeable pavements and grass.
A new study by Cardiff University and the University of Vermont found that efforts to improve water quality can counteract the effects of climate warming on river invertebrates. Over a 20-year period, average water temperatures increased, but improvements in water quality offset the biological effects of warming.
A large-scale study has investigated the composition of microorganisms in the digestive tract of animals, revealing evolutionary relationships between host species and their gut microbiomes. The study found that closely related species share similar microbial communities, while diet also plays a significant role in shaping the gut micr...
A study by Brazilian researchers shows that the Tietê River's water quality improves steadily as it flows through a series of dams along its 1,100 km course. The filtration process retains matter in suspension, affecting light absorption and ultimately making the river transparent at its downstream end.
Complex federal food safety rules are being clarified to assess agricultural water use, with potential cost savings of $37 million annually nationwide. The Produce Safety Alliance is developing new ways to evaluate and manage water sources to reduce contamination risks.
A study by Hisahiro Naito and Annie Mwayi Mapulanga found that deforestation in Malawi is associated with lower safe drinking water usage, despite increased runoff. The authors estimate a 9% decrease in precipitation equivalent to a 14% loss of forest area, highlighting the importance of preserving forests for water source protection.
Researchers are studying the effects of climate change on glacier-fed rivers in Peru, which provide water for food, power and industry to remote communities. The study aims to understand the potential impacts on future water resources and develop strategies to mitigate them.
A recent study found that climate change is reducing waterbird habitats across the Great Basin, resulting in fewer birds in the region. The research, published in Scientific Reports, examined temperature and precipitation data from over a century and compared it with 50 years of bird surveys.
Chronic exposure to poor water quality limits coral recovery rates across the Great Barrier Reef. Improving water quality can enhance recovery rates, but it won't suffice to rescue the reef from threats like climate change and pollution.
Researchers found that reducing carbon emissions through biofuels or increasing domestic food production can increase nitrogen runoff into US waterways, causing water quality problems. However, scenarios involving sustainable growth and conservation proved to be the most successful in minimizing water quality risks.
The study found that anthropogenic nitrogen discharge significantly increased DIN in US rivers due to fertilizer use, while European rivers were affected by point source pollution. The total anthropogenic impact on Pacific Ocean export has risen from 10% to 30% over the past 20 years.
The Collaborative Laboratories for Environmental Analysis and Remediation at UTA is analyzing surface and groundwater quality in West Texas, supported by Apache Corporation's continued sponsorship. The research aims to comprehensively monitor water resources in the region, including San Solomon Springs.
Scientists discovered that Antarctic meltwater streams retain their chemical composition regardless of flow rate, with high levels of chemical weathering being the primary mechanism. This finding has implications for understanding stream behavior and predicting water quality changes in temperate watersheds.
A new study found that over 5.6 million Americans are at risk of health problems due to high nitrate levels in their drinking water. Hispanic communities are particularly vulnerable, with higher proportions serving water systems with elevated nitrate levels.
The new grant will support activities at four partner institutions, including the University of Delaware, to build up the state's research expertise and workforce for future jobs. The project aims to improve water quality, focusing on salinization and its effects on drinking water and freshwater habitats.
A study published in Environmental Science & Technology found that showering, using sinks, and flushing toilets can expose people to Legionella pneumophila bacteria, which causes pneumonia-like disease. The researchers recommend setting a risk-based concentration limit for indoor water quality to prevent outbreaks.
A team of scientists from The Ohio State University shared early results from a trio of studies aimed at improving models designed to guide agricultural practices for reducing the risk of nitrogen and phosphorous farm runoff. These models can help quantify the impact of fertilizer application timing on nutrient runoff.
Research highlights the presence of harmful toxins in common food items and water sources, including rice, barbecued meat, tap water, and toilets. Studies estimate high levels of arsenic and polycyclic aromatic hydrocarbons in rice and heat-processed meat, respectively.
A new study found that US tap water contains a mixture of contaminants, including pesticides, pharmaceuticals, and lead, which can harm public health. The researchers detected high levels of lead in 23 samples, exceeding the EPA's zero-lead goal.
Researchers developed a new approach to measure freshwater environments and found New Jersey's current nutrient levels are likely too high. The team suggests a lower threshold of 50 micrograms per liter to maintain healthy ecosystems.
A new study by Oregon State University economists found that watershed groups in the US have a positive impact on local water quality. The researchers analyzed data from 2,150 watersheds and found that increased group activity was associated with improved water quality.
A comprehensive study found significant improvements in US water quality since the 1972 Clean Water Act took effect. However, recent economic analyses estimate that the costs of the legislation consistently outweigh its benefits.
A UNIST student startup team, LOAD, has developed a drone-based system for efficient water quality monitoring. The system uses a portable analysis device on the drone's lower part to maximize accuracy and speed in data collection.
Researchers find switching from coal to natural gas reduces air pollution, carbon emissions, but may increase water stress in some regions. A transition from coal to natural gas can have co-benefits for air quality and carbon mitigation, but trade-offs exist depending on the sector and location.
The University of Oklahoma research group, led by Mark Nanny, will utilize the new ICP-MS instrument to study interactions between nanomaterials and drugs, population dynamics, and organism-metal interactions. The grant also aims to engage rural high school teachers and address water quality issues in Oklahoma's Tribal Nations.
Researchers have identified simpler computer models that can accurately predict current beach conditions from past data, enabling faster and more reliable detection of fecal microbes. The new approach combines wavelet transform and artificial neural network analysis, requiring only bacterial data from the past, with no additional inputs.
Researchers developed a new approach to measuring recreational water quality, focusing on the quantity and type of mammalian feces in the water. They found that ecosystem-specific characteristics, such as freshwater sediment and estuary transport, also play a significant role in determining enterococci concentrations.
A new study by Portland State University found that higher-than-acceptable levels of pollutants remain in urbanized regions of South Korea's Han River basin, particularly in suburban areas. The research suggests that land management practices, such as afforestation and conservation, can help improve water quality.
A landmark study published in Nature Geoscience reveals the Great Barrier Reef has suffered five death events over 30,000 years due to variations in sea level and associated environmental changes. The reef adapted by migrating up and down the seafloor, demonstrating remarkable resilience.
A new MIT system captures water evaporating from cooling towers, reducing water loss and providing clean drinking water for coastal cities. The system's efficiency is improved by using ion beams to charge water droplets, allowing them to be drawn toward a mesh of wires.
Research led by the University of Sydney found that warm water events decrease the ratio of healthy oils to protein in fish and squid, while cold water events increase their nutritional quality. This has implications for marine life, including humans, who consume similar foods.
The University of Texas at San Antonio is upgrading its storm water management facilities with a low-impact development approach to remove pollutants from storm water runoff. The project will treat runoff from 9.5 acres of campus rooftops and parking lots, reducing contaminants entering the Edwards Aquifer.
A landmark international study found the Great Barrier Reef is more resilient to sea-level rise and temperature changes than thought, but highly sensitive to sediment input and poor water quality. The reef's ability to survive is uncertain due to current stresses and projected future changes.
Researchers found that logging in Solomon Islands' tropical forests can lead to unsustainable soil erosion and significant impacts on downstream water quality. The study highlights the need for tighter regulations and local buy-in for forest management to protect biodiversity and ecosystem services.
Research finds that coastal stream restoration projects are unevenly distributed across central California, favoring areas with more affluent residents. The study analyzed 699 sites of publicly funded restoration projects between Santa Cruz and Santa Barbara counties, identifying native fish presence as the primary ecological driver an...
A recent Portland State University study reveals people who engage in outdoor activities such as camping and fishing are more attuned to water quality issues than the general population. The research found that higher levels of education and socioeconomic status correlate with increased concern for water quality.
Researchers from the University of Missouri found that members of the public are more willing to pay for improved water quality than other ecosystem services. Participants in a nationwide survey consistently preferred higher monthly payments for water quality improvements over flood control and habitat protection.
Researchers warn that achieving water quality goals for the Gulf of Mexico will take decades, as decades-long nitrogen buildup from agriculture poses a long-term problem. The study suggests major changes in agricultural and river management practices are necessary to improve water quality.
Researchers report that wildfires can cause a variable but predictable impact on the substances released from soils and flow into drinking water sources, leading to contamination. The study found that as wildfire severity increases, the amount of dissolved organic carbon (DOC) released by soil decreases, while sediments increase.
Researchers have developed low-cost, low-tech solutions to improve water quality in municipal tanks by circulating water through shower head-like attachments. Additionally, they've found effective adsorbents using polymer-coated magnetic nanoparticles to remove micropollutants from water, which can be reused and restored.
A study published in Food Chemistry shows that reducing water usage for cherry tomato crops by 50% maintains quality and increases carotenoid levels. This technique can be applied to other crops, offering a sustainable solution for farmers and consumers.
A Portland State University study published in Water Resources Research found that involving residents in local water policies is key to building healthy and resilient city water systems. The research bridged the gap between residents' concerns about costs and water shortages and water managers' concerns about aging infrastructure, res...