Article
Engineering, Environmental
Md Hadiuzzaman, David A. A. Ladner, Maryam Salehi
Summary: The use of plastic potable water pipes is increasing due to their low cost, noncorrosive characteristics, and easy installation. However, little is known about the fate of heavy metals in these pipes. This study examines the effect of plastic pipe surface aging on lead deposition under stagnant conditions.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Article
Environmental Sciences
Lulu Cai, Kangning Xiong, Ziqi Liu, Yuan Li, Bo Fan
Summary: Understanding the water use characteristics of plants is crucial for forest water management and vegetation restoration. This study investigated the water uptake patterns and efficiency of four woody plants in karst desertification areas using stable isotopes. The results showed flexible water uptake patterns and the importance of fissure soil water as a water source for vegetation restoration in karst areas.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Randall Bonnell, Daniel McGrath, Keith Williams, Ryan Webb, Steven R. Fassnacht, Hans-Peter Marshall
Summary: Radar instruments are widely used for measuring snow water equivalent (SWE), with Interferometric Synthetic Aperture Radar being a promising method from spaceborne platforms. Velocity estimates are a significant source of uncertainty in radar SWE retrievals, especially in wet snow where velocity is influenced by snow density and liquid water content (LWC). Utilizing ground-penetrating radar, researchers measured snow depths, density, and estimated SWE and LWC values, showing that LWC variability is key in accurately measuring SWE for future radar missions.
Article
Environmental Sciences
D. Vione, N. Colombo, D. Said-Pullicino, D. Bocchiola, G. Confortola, F. Salerno, G. Viviano, S. Fratianni, M. Martin, D. Godone, M. Freppaz
Summary: Research has found that the characteristics of DOM in glacier-fed ponds are affected by heavy rainfall events during the melting season, possibly due to transient modifications of the subglacial hydrological system. With global warming, an increase in summer rainfall events in the Alps is predicted.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Zhiling Wu, Xianchun Tang, Hongbin Chen
Summary: Research on invertebrates in drinking water demonstrated that their abundance and taxa are influenced by seasonality and treatment processes, with rotifers, nematodes, and crustaceans being dominant. Efficient removal of invertebrates was observed in the sedimentation tank, but more propagation and leakage occurred in the sand and BAC filters, particularly in the latter. The proportion of endogenous invertebrates gradually increased along the treatment process.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2021)
Article
Engineering, Environmental
Kathryn G. Lopez, Jinghua Xiao, Christopher Crockett, Christian Lytle, Haley Grubbs, Marc Edwards
Summary: After switching its source water from ground to surface water, a utility observed a significant increase in lead levels in the water that could not be explained by existing knowledge. An in-depth investigation and laboratory experiments revealed a strong correlation between seasonal fluctuations in surface water nitrate levels and the release of lead.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2023)
Article
Environmental Sciences
Lijuan Song, Chunqiao Song, Shuangxiao Luo, Tan Chen, Kai Liu, Yunlin Zhang, Linghong Ke
Summary: Lakes are essential for the Earth's water cycle and can help alleviate floods and droughts. This study focused on monitoring and modeling the seasonal variations of lakes in China, providing valuable insights into the hydrologic behaviors of Chinese lakes and informing regional water resource management.
REMOTE SENSING OF ENVIRONMENT
(2023)
Article
Environmental Sciences
Happiness Mojela, Gerhard Gericke, Heena Madhav, Soraya Phumzile Malinga
Summary: Global issues such as pollution and global warming have led to changes in water characteristics over the past 20 years, with an increase in natural organic matter (NOM) concentration globally. This increase in NOM has negatively impacted water treatment processes and drinking water quality. Therefore, understanding the seasonal variations and composition of NOM is crucial for addressing NOM-related issues.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Geography, Physical
Ugo Nanni, Dirk Scherler, Francois Ayoub, Romain Millan, Frederic Herman, Jean-Philippe Avouac
Summary: Accurate measurement of ice flow is vital for predicting future changes in glaciers and ice caps. While cross-correlation of satellite images can be used for large-scale measurements, accurate glacier velocity retrieval at shorter timescales is still challenging due to noise interference. This study utilized the wide availability of satellite imagery to analyze glacier velocity changes over 10-day intervals for 7 years in the western Pamirs, revealing strong seasonal trends and short-term responses of glaciers to changing meteorological and climatic conditions. The findings indicate significant velocity increases during spring/summer and seldom observed glacier accelerations in autumn, shedding light on the influence of subglacial hydrology efficiency and glacier instabilities on ice dynamics.
Article
Environmental Sciences
Jean Marcais, Louis A. Derry, Luca Guillaumot, Luc Aquilina, Jean-Raynald de Dreuzy
Summary: The study found that the transit time distributions of streamwater in the watershed display different proportions of old waters, mainly due to groundwater contributions to the stream. Seasonal variations in transit time are influenced by the variable contributions of different flowpaths and the stratification of groundwater residence times. A parsimonious model is developed to capture the groundwater contribution and its effect on transient transit times. Calibration of hydraulic conductivity, porosities, and tracer data successfully reproduces the concentrations and dynamics of the stream. Groundwater flow contribution is controlled by the hydraulic conductivity, while its age is controlled by the porosities.
WATER RESOURCES RESEARCH
(2022)
Article
Environmental Sciences
Qibin Liang, Ting Chen, Yanxia Wang, Lei Gao, Lei Hou
Summary: This study investigates the remobilization mechanism of sediment phosphorus (P) in a wetland in southwest China. The results show a coupled remobilization of iron (Fe) and P in the sediment, with Fe-reducing bacteria responsible for the dissolution of Fe oxides and subsequent P release. The study also highlights the high release potential of the wetland, with sediment contributing a significant amount of P to the water column.
ENVIRONMENTAL POLLUTION
(2022)
Article
Engineering, Environmental
Enrique E. Rodriguez, Charles B. Bott, Krista R. Wigginton, Nancy G. Love
Summary: Potable water reuse technologies are used to treat wastewater to drinking water quality to help sustain water resources. In this study, bioassays were used to screen the toxicity of a carbon-based potable water reuse plant. The results showed significant removal of dioxin-like compounds, but variable and low estrogenicity levels. Comparing with guidelines, the plant's produced water met the bioassay standards. This research highlights the potential utility and challenges of using bioassays for system performance assessment.
Article
Water Resources
Ramazan Senol, Osamah Salman, Zekeriya Kaya
Summary: This study developed a fully automatic system that produces water from ambient humidity to address the issue of potable water shortage. By using salt and humidity as raw materials, the system offers advantages in terms of human health and cost. The experiment results show that the amount of water produced is directly proportional to the ambient humidity.
APPLIED WATER SCIENCE
(2023)
Article
Environmental Sciences
Maryam Salehi
Summary: Global water shortages due to various factors have led to water utilities and consumers adopting different practices to cope, which may pose risks to water quality. It is important to conduct consistent monitoring and implement mitigation strategies to reduce potential risks.
ENVIRONMENT INTERNATIONAL
(2022)
Article
Environmental Sciences
Yufei Wang, Meng Zhou, Zhaoru Zhang, Michael S. Dinniman
Summary: Intrusions of warm and nutrient-rich CDW across the Ross Sea shelf break play a crucial role in ice shelf basal melting and creating the physical environment for biochemical processes. Various mechanisms, including mesoscale eddies and interactions between ocean currents and topographic features, drive CDW intrusions into the Ross Sea. This study investigates the seasonal variations in CDW transport using wind data and a circulation model. The results suggest that CDW intrusions occur mainly along deep troughs in the eastern flanks of the shelf, and their timing is correlated with ocean surface stress fields and Ekman pumping. The findings emphasize the importance of air-sea interactions and potential climate change in the Ross Sea environment.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Siddhartha Roy, Marc A. Edwards
Summary: Using established bio-kinetic models, the study investigated the likelihood of fetal deaths in pregnant women exposed to high water lead levels, with results showing a slight increase in miscarriage odds during the FWC period but no significant changes before or after the water crisis.
JOURNAL OF EXPOSURE SCIENCE AND ENVIRONMENTAL EPIDEMIOLOGY
(2022)
Article
Engineering, Environmental
Mohammad Ali Khaksar Fasaee, Jorge Pesantez, Kelsey J. Pieper, Erin Ling, Brian Benham, Marc Edwards, Emily Berglund
Summary: This research investigates and compares the use of statistical models and machine learning models for predicting lead levels in household drinking water. The study demonstrates that low-resolution data collected by residents can be used as input for models to estimate lead levels and provides a set of prediction models for private well users to assess the risk of lead contamination.
Article
Environmental Sciences
Alasdair Cohen, Md Rasheduzzaman, Amanda Darling, Leigh-Anne Krometis, Marc Edwards, Teresa Brown, Tahmina Ahmed, Erin Wettstone, Suporn Pholwat, Mami Taniuchi, Elizabeth T. Rogawski McQuade
Summary: Unsafe drinking water consumption is a significant health burden globally, including in rural areas of the US. This study conducted surveys and analyzed water samples from households in Central Appalachia to assess water sources, quality, and associated health outcomes. The findings suggest that lower-income residents without utility-supplied water in southwest Virginia may face microbiological and chemical contaminants in their drinking water.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Correction
Green & Sustainable Science & Technology
Shantanu V. Bhide, Stanley B. Grant, Emily A. Parker, Megan A. Rippy, Adil N. Godrej, Sujay Kaushal, Greg Prelewicz, Niffy Saji, Shannon Curtis, Peter Vikesland, Ayella Maile-Moskowitz, Marc Edwards, Kathryn G. Lopez, Thomas A. Birkland, Todd Schenk
NATURE SUSTAINABILITY
(2023)
Article
Engineering, Civil
Euijin Yang, Daniel A. A. Butcher, Marc A. A. Edwards, Kasey M. M. Faust
Summary: Residents may lose trust in drinking water systems and turn to alternative water sources when encountering water-quality issues. The erosion of trust can be caused by breakdowns in communication, poor handling of issues, or misconceptions about water quality. This study found that trust is related to individuals' actions and interactions with the water system.
JOURNAL OF WATER RESOURCES PLANNING AND MANAGEMENT
(2023)
Article
Engineering, Environmental
Kathryn G. Lopez, Jinghua Xiao, Christopher Crockett, Christian Lytle, Haley Grubbs, Marc Edwards
Summary: After switching its source water from ground to surface water, a utility observed a significant increase in lead levels in the water that could not be explained by existing knowledge. An in-depth investigation and laboratory experiments revealed a strong correlation between seasonal fluctuations in surface water nitrate levels and the release of lead.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Kory Wait, Siddhartha Roy, Marc A. Edwards
Summary: A large building with recurrent leaks in the hot water recirculating line was investigated. The leaks occurred on the top half of heavily coated pipes. Under-deposit corrosion was ruled out as the cause, while a chemistry-related hot water pitting mechanism was hypothesized. The hypothesis was verified by conducting macrocell experiments, which showed that copper or stainless steel coated with manganese oxides exhibited high cathodic tendencies, leading to pitting corrosion.
Review
Environmental Sciences
Christian J. Lytle, Marc A. Edwards
Summary: Water utilities dose phosphates to potable water for reducing aesthetic problems, inhibiting scale formation, and reducing corrosion. However, there are significant gaps in understanding due to proprietary nature of some phosphate chemicals. This article summarizes the current state of the science, provides operational guidance, and identifies knowledge gaps to improve phosphate chemical performance and avoid unintended consequences.
Article
Environmental Sciences
Sudeshna Ghosh, Laurel Strom, Ni Joyce Zhu, Kandace E. Donaldson, Anna Kurowski, Haniyyah Majeed, Joseph Oliver Falkinham, Marc A. Edwards, Amy Pruden
Summary: Distribution of reclaimed water poses unique challenges for pathogen control in comparison to conventional potable water. Elevated temperatures in arid regions can worsen these challenges by accelerating disinfectant decay and promoting microbial growth. A study was conducted to assess the effectiveness of microbiological control treatments at different temperatures by analyzing six simulated reclaimed water distribution systems. The results showed that certain treatment methods were less effective at higher temperatures, indicating the need for further research to control specific pathogens under elevated temperature conditions.
Editorial Material
Engineering, Environmental
Siddhartha Roy, Kim N. Dietrich, Hernan F. Gomez, Marc A. Edwards
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Yang Song, Rachel Finkelstein, William Rhoads, Marc A. Edwards, Amy Pruden
Summary: This study investigates the effects of copper on the microbial community in hot water plumbing systems. The results show that even low doses of copper can have an impact on the broader microbial community and that opportunistic pathogens in the system are highly copper tolerant. The addition of orthophosphate can reduce the bioavailability of copper. Functional gene analysis suggests that membrane damage and interruption of nucleic acid replication may be involved in the copper inactivation mechanisms.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Miriam Tariq, Felipe Araya, Marc A. Edwards, Kasey M. Faust
Summary: The underutilization of water infrastructure in shrinking cities can have negative impacts on water quality and public perception of water safety. A study found that people who are aware of water contamination events are more willing to pay for improved water quality. Different factors affect the willingness to pay for those who are aware and unaware of such events.
Article
Environmental Sciences
Rebecca Kriss, Marc Edwards
Summary: Elevated cuprosolvency in drinking water poses aesthetic and health concerns. The Lead and Copper Rule in the United States has gaps, leaving some consumers vulnerable. Our research shows that a simple pH adjustment is not sufficient to address copper corrosion, and alternative interventions may be needed.
Article
Engineering, Environmental
Abraham Cullom, Matheu Storme Spencer, Myra D. Williams, Joseph O. Falkinham III, Connor Brown, Marc A. Edwards, Amy Pruden
Summary: In this study, the effects of disinfectants and pipe materials on microbial community composition and enrichment of antibiotic resistance genes were investigated. The results showed that both disinfectants and pipe materials had independent and interactive effects on ARG and microbial community composition, with monochloramine showing a potential risk of enrichment of antibiotic resistance genes.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Qiaozhi Liu, Yuan Zhuang, Yao Zhang, Zhenguo Qi, Marc A. Edwards, Baoyou Shi
Summary: The quantitative evaluation of the chemical stability of cement mortar lining (CML) in cement mortar lined iron pipes under different drinking water conditions is still lacking. This study investigated the leaching of pipe material into water and changes in surface properties using pipe reactors. Results showed that water with hardness and alkalinity higher than 30 mg/L can significantly decrease the release of CML material by forming a calcium carbonate layer. The formation of the calcium carbonate layer can occur even if the initial water calcium carbonate precipitation potential (CCPP) is negative.
