Articles tagged with Water Quality
Researchers found that young African fish raised in cloudy water developed larger eye structures than those raised in clear water. As the fish age, they lose this ability to adapt. The study also showed that older fish have bigger brains and optic lobes, suggesting different sensory demands at various stages of life.
Researchers found that oil palm plantations in Indonesia's Kais River Watershed are causing significant increases in precipitation, runoff, and soil moisture, leading to dramatically worse water quality. The transition from tropical rainforest to oil-palm plantation has resulted in a 16.9% increase in sedimentation, 78.1% increase in n...
A comprehensive analysis of over 200 scientific articles reveals the fundamental importance of scavengers and carrion in wetlands, benefiting soil, plants, birds, and mammals. The study highlights five different functions performed by scavengers during carrion consumption, including nutrient recycling and pathogen control.
Researchers found that sunny day flooding in coastal areas can lead to elevated levels of fecal bacteria in waterways. The study suggests policymakers and public health officials should be aware of potential risks associated with tidal flooding.
A mysterious plasmid, pBI143, found in 90% of human intestines, could be used to identify faecal contamination and offer insights into intestinal diseases. The discovery also highlights the prevalence of 'cryptic' plasmids in human gut microbiota.
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.
A new water quality analysis technique can detect organic chemicals in rivers and lakes, identifying their source and predicting their impact. This method uses high-resolution mass spectrometry to analyze water samples within an hour, providing a comprehensive overview of all organic molecules present.
A study published in Nature Food reveals that optimized phosphorus use can extend its stock for up to 531 years, reducing the demand by 3,000 kt annually. Currently, around 30-40% of farm soils have over-applications, mainly due to European and North American countries.
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 study published in Global Change Biology found that low deep-water oxygen concentrations lead to increased algae growth and further oxygen declines. This positive feedback cycle can result in frequent algal blooms, disrupting lake ecosystems and human health.
Research by University of Illinois Urbana-Champaign suggests that phosphorus legacy in riverbeds can delay water quality improvements in the Gulf of Mexico. It may take years or even decades for the reductions to be seen at the Gulf, according to a study published in Science of the Total Environment.
Engineers developed an ultra-sensitive sensor made of graphene that can detect low concentrations of lead ions in water, achieving a record limit of detection down to the femtomolar range. The device's high sensitivity enables the detection of even one lead ion in a reasonable volume of water.
A recent study published in Environmental Science and Ecotechnology explores the impact of reduced building occupancy on water quality. The research found that prolonged stagnation led to significant variations in water quality, including changes in heavy metal and chlorine levels.
Researchers found that adding protruding rocks to restored streams increases the abundance and diversity of stream insect eggs, but not necessarily their larval stages. This study suggests that stable rock landing areas can enhance aquatic insect populations in restored streams.
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.
Researchers have found that struvite, a recycled phosphorus fertilizer, can reduce nutrient leaching and maintain soybean yields compared to conventional fertilizers. The study showed that struvite can be a full substitute for traditional fertilizers in terms of yield benefits.
A study of European river systems from 1969-2020 found that freshwater biodiversity improved until the 2000s but stagnated since then. The researchers attribute this decline to diminishing effectiveness of existing measures and emergence of new pollutants, climate change, and invasive species.
The study highlights that up to 80% of dye-containing industrial wastewaters are released untreated into waterways, posing direct and indirect threats to human, animal, and plant health. New sustainable technologies and regulations are needed to combat the issue.
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 finds climate change is increasing the likelihood of toxic blue-green algae blooms in US lakes, which can damage human livers and kill wild and domestic animals. Researchers used EPA data from 2,804 lakes collected between 2007 and 2017 to predict toxin spikes.
Researchers have pinpointed the emergence of muddy flavors in farmed fish by measuring the concentration of geosmin and other compounds. The study highlights the importance of water quality management to prevent the production of off-flavor compounds, which can impact aquaculture industry revenue and sustainability.
Researchers found that adding a social cost to carbon emissions leads to a significant reduction in fertilizer runoff, resulting in improved water quality and a decrease in the Gulf of Mexico's dead zone. The study suggests that implementing a carbon price can help meet the US commitment to the Paris Accord while improving water quality.
The publication provides comprehensive guidance on evaluating and using water safely in agriculture, with a focus on health and environmental protection. It offers technical solutions and good agricultural practices to mitigate risks from crop and livestock farming, fish farming, and wastewater use.
MSU is working to make drinking water safer by better understanding pathogens like Legionella and disinfection byproducts in distribution systems. The research aims to create a systematic way to monitor water systems and assess health risks associated with these contaminants.
Research on sea-level rise's impact on freshwater mussels reveals that high salt concentrations can be toxic to young mussels. The study provides guidance for conservation programs addressing climate-induced sea level rise and saltwater intrusion, affecting numerous vulnerable species.
River water quality is deteriorating during extreme weather events, such as droughts, heatwaves, rainstorms, and floods. The study found that water quality tends to decline during these events due to increased contaminant transport and reduced dilution.
A review of almost 1000 studies found climate change negatively impacts water quality globally, increasing salinity and pollutant concentrations. The research highlights the need for improved understanding and management strategies to mitigate these effects.
A new study published in Environmental Research Letters reveals that poor water quality violations disproportionately affect the most vulnerable communities in the US. Approximately 70% of those affected ranked in the highest social vulnerability category, highlighting the need for a broader definition of disadvantaged communities beyo...
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 new UNC study found significant disparities in testing and treatment of private wells among low-income and minority households in North Carolina. The research highlights alarming levels of contamination and unequal access to well testing and treatment.
Researchers develop Dynamic Water Diversion Optimization (DWDO) to improve water quality in Lake Dianchi, China's largest eutrophic freshwater lake. DWDO significantly reduces total nitrogen and phosphorus concentrations while minimizing annual water diversion costs.
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.
A WVU researcher is working to understand the unknowns about microorganisms growing inside pipes that bring drinking water to homes and businesses. Biofilms can be detrimental to drinking water quality, but the researcher aims to develop strategies for maintaining water quality throughout complex infrastructures.
University of Missouri researchers developed a method using thermal induction heating to rapidly break down PFAS on the surface of granular activated carbon and anion exchange resins. The process achieved 98% degradation in just 20 seconds, offering a highly energy-efficient alternative to conventional methods.
A recent study published in Science of the Total Environment found a scarcity of studies on microbial and chemical drinking water contamination in Appalachia and associated health outcomes. Only 85 publications met the criteria, with many gaps remaining to be filled.
Researchers developed a suite of tools to assess economic benefits of improving urban stream water quality. The 'ecological production function framework' estimates use and non-use benefits, including increased property values and protected natural resources.
A new University of Illinois study suggests that widespread planting of cereal rye could significantly reduce nitrate levels in Illinois' tile drainage water. The research found that adopting winter cover crops, such as cereal rye, can help minimize nitrogen loss and improve water quality.
Researchers from the University of South Florida and EPA developed a new classification system to target wetland restoration and protection. The system categorizes freshwater wetlands into four classes based on their proximity to streams, demonstrating the effects of wetlands on water quality at a continental scale.
Researchers at Concordia University have developed a system of floating geotextile filters that efficiently remove suspended solids, algae, and nutrients from shallow lakes. The study shows promising results in lake water remediation, with the potential to scale up and benefit larger bodies of water.
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.
Researchers at Chalmers University of Technology have developed a cellulose-based material that can easily remove 80% of toxic dyes from wastewater using sunlight. The method is cost-effective, simple to set up, and could benefit countries with poor water treatment technologies.
A new study from the University of Illinois finds that local enforcement of manure management regulations can effectively reduce nutrient concentrations in rivers and lakes. The study focuses on Wisconsin's unique approach, which allows counties to participate in enforcement without state approval.
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.
Researchers found that a simple 19th century Secchi disk is effective in monitoring phytoplankton abundance, providing valuable long-term data on ocean changes. The tool's continued use supports scientists studying climate change, ecosystem health, and water quality.
The Nile River Delta faces significant environmental threats from heavy metal pollution and coastal erosion, impacting 60 million people in Egypt. The study highlights the need for conservation measures to slow degradation and recover the ecosystem.
A model predicting oxygen levels in freshwater streams, developed by WVU researcher Omar Abdul-Aziz, helps determine stream pollution and health. The tool allows citizen scientists to take action on stream pollution, with potential applications for implementing the Clean Water Act.
Researchers found that solar water disinfection (SODIS) was effective in inactivating Escherichia coli bacteria at both low and high altitudes. At high altitudes, bacterial inactivation increased by 1.7-fold after two hours, with no significant differences after six hours. The study highlights the potential of SODIS to improve global a...
Estuaries along the Atlantic coast and eastern Gulf of Mexico are expected to experience significant increases in nutrient loading, posing risks for harmful algal blooms and ecosystem health. The study identified regions with high adaptive capacity as having more resources to mitigate these effects.
A new study maps high arsenic levels in groundwater wells across northern Nevada, northeastern California, and western Utah, with over 49,000 users at risk. The model uses geologic, hydrologic, and tectonic variables to predict elevated arsenic levels, particularly in regions like Carson Desert basin and Truckee Meadows.
Researchers from Northwestern University have developed a new biosensor device that accurately detects toxic levels of fluoride in water, allowing for easy use outside of a lab. The device has been field-tested in rural Kenya, showing excellent accuracy and usability results.
Researchers found that small, disconnected wetlands are twice as effective in catching pollutants like nitrogen and phosphorus. These isolated wetlands can protect lake or river ecosystems from pollution, improving water quality and biodiversity.
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.
A new study on Chesapeake Bay water quality found that pollution thresholds affect reduction efforts, and larger reductions may be needed to induce complete reversal of eutrophication-induced hypoxia. The research revealed that the system responds only until a certain threshold is crossed, then it takes twice the effort to make a change.
A new genome-based taxonomy has been developed to characterize ecological niches of Microcystis, including nutrient requirements and seasonality. This will aid in the control of harmful Microcystis blooms and reduce health risks associated with water quality management.
Researchers found that rusty center pivots indicate a lack of nitrate in the groundwater they feed. In fact, most wells supplying full-rust and part-rust pivots had nitrate concentrations below the EPA's safety threshold. However, some part-rust pivots showed higher nitrate levels, highlighting the need for further investigation.
The study found that oxygen levels dropped to zero after the storm and stayed there for almost a month, leading to a 36-60% decline in adult fish. However, juvenile sturgeon survived and even increased in numbers two years later, suggesting a potential refuge upstream.
Researchers have launched five projects to investigate the impact of pollution on UK rivers, which fail to meet good ecological status due to pollutants like chemicals, microplastics, and pharmaceuticals. The projects aim to improve water quality, biodiversity, and resilience to climate change.
A six-year study confirms stream contamination with pesticides from trespass cannabis cultivation sites in Northern California, threatening local aquatic species and freshwater resources. The study's findings highlight the need for proactive approaches to mitigate the impacts of these sites on downstream waterways and habitats.
A new study by Stanford University scientists reveals that beaver dams can have a significant positive impact on river water quality in the US West. The dams raise water levels, diverting nutrients and contaminants into surrounding soils, which act as filters, improving water quality.