The Yellow River Delta, characterized by its rich biodiversity and dynamic hydrological system, is under increasing pressure from industrial pollutants and agricultural runoff. The study specifically aimed to analyze how these pollutants disperse in soils influenced by plant roots (rhizosphere) compared to soils that are not directly influenced (non-rhizosphere). Understanding these patterns is crucial for developing effective soil management strategies and mitigating the risks posed by PTEs to both the environment and human health.

Researchers collected soil samples from various sites within the delta, ensuring a comprehensive assessment of the spatial distribution of PTEs. The focus was on key elements like cadmium, lead, and arsenic, which are notorious for their toxicity and potential to bioaccumulate in the food chain. By employing advanced analytical techniques, the team could quantify the concentrations of these elements, uncovering significant differences between the rhizosphere and non-rhizosphere soils.

The results revealed that rhizosphere soils exhibited notably lower concentrations of PTEs compared to their non-rhizosphere counterparts. This finding suggests that the root systems of dominant plant species in the delta may play a vital role in phytoremediation, the process wherein plants absorb and mitigate soil contaminants. Such plants may establish a natural barrier, thereby protecting the surrounding environments from the influx of PTEs introduced by human activities.

An intriguing aspect of the study was the identification of specific plant species that demonstrated heightened efficacy in reducing PTE concentrations in the soil. The research revealed that certain root structures could enhance soil health by fostering microbial communities capable of degrading contaminants. This symbiotic relationship between plants and soil microorganisms not only aids in contaminant reduction but can also enhance soil fertility and resilience.

Additionally, the study underscored the importance of properly managing agricultural practices in the region. Traditional farming methods without adequate checks can exacerbate soil contamination by increasing the runoff of pollutants. The research advocates for adopting sustainable agricultural practices that mitigate environmental impact while promoting ecosystem health. This is particularly important in ecologically sensitive areas like the Yellow River Delta, where the balance between development and conservation is crucial.

The findings of this research are not only relevant to local agricultural practices but also resonate with global concerns regarding soil health and food safety. As urbanization and industrial activities continue to rise worldwide, understanding the dynamics of soil contamination becomes ever more critical. The study provides insights that can be utilized in similar ecosystems facing similar challenges, contributing to a broader understanding of PTE behavior in soils.

The study’s implications extend beyond academic discourse; they advocate for policy changes and community engagement in environmental stewardship. Enhanced awareness of the consequences of soil contamination can lead to more robust regulatory frameworks and community-led initiatives aimed at reducing pollution. The interplay between scientific research and public policy is vital for achieving long-term solutions to soil degradation.

Moreover, the research team emphasized the need for ongoing monitoring of soil health in the Yellow River Delta. Continuous assessment of PTE levels and their ecological consequences is essential to adaptively manage the region’s environmental resources. Such initiatives can help ensure that the delta remains a sustainable habitat for its diverse flora and fauna, as well as a reliable source of livelihood for local communities.

The novel approach of combining ecological research with practical applications stands as a highlight of this study. By integrating scientific findings into practical frameworks, such as improving soil amendment practices and encouraging the use of bioengineering techniques in agricultural systems, the research team hopes to pave the way for innovative solutions. This multidisciplinary strategy can effectively address the pressing challenges of soil pollution, aligning ecological integrity with agricultural productivity.

In wrapping up their findings, the authors called for future research to expand the scope of investigation into other potentially toxic elements and their cumulative effects on both soil ecology and plant health. This research lays the groundwork for subsequent studies that could examine long-term trends in soil contamination and the effectiveness of various remediation strategies. Such initiatives will be indispensable in ensuring the sustainability of the Yellow River Delta as both an ecological zone and a vital agricultural hub.

By recognizing the critical role that plant species can play in soil remediation, this study reinforces the idea that integrated approaches combining ecology and agriculture can yield significant benefits for environmental health. Holistic management strategies that account for the interrelationships between land use, pollution, and biodiversity will be essential for fostering resilient ecosystems capable of withstanding the pressures of modern development.

As this study highlights the intricate connections between soils, plants, and PTEs, it also opens avenues for exploring bioremediation techniques that leverage these natural processes. The insights gained are not only applicable to the Yellow River Delta but can inspire global efforts in combating soil contamination, enhancing food security, and promoting sustainable agricultural practices.

In conclusion, the groundbreaking research by Tong, Fan, and Yang serves as a significant contribution to our understanding of soil contamination dynamics in one of the world’s critical ecological regions. It raises awareness about the impacts of human activities on soil health and underscores the need for sustainable practices and ongoing research to safeguard environmental and public health.

Subject of Research: Distribution of potentially toxic elements in soil in the Yellow River Delta
Article Title: Distribution patterns of potentially toxic elements in rhizosphere and non-rhizosphere soils of dominant plant species in the Yellow River Delta
Article References: Tong, S., Fan, Y., Yang, Y. et al. Distribution patterns of potentially toxic elements in rhizosphere and non-rhizosphere soils of dominant plant species in the Yellow River Delta. Environ Monit Assess 198, 45 (2026). https://doi.org/10.1007/s10661-025-14843-4
Image Credits: AI Generated
DOI: https://doi.org/10.1007/s10661-025-14843-4
Keywords: Toxic elements, soil contamination, Yellow River Delta, ecological health, phytoremediation.

The study, published in the Environmental Monitoring and Assessment journal, presents an in-depth examination of the distribution of OCPs within a semi-enclosed plateau lake. These pesticides, which were widely used in agriculture throughout the 20th century, are notorious for their long-term environmental persistence and potential for bioaccumulation through the food chain. The research team meticulously analyzed water samples collected from various locations around the lake, establishing a comprehensive understanding of how riverine systems can act as pathways for contaminant transport.

Analysis of sediment cores from the lake reveals unsettling trends related to the historical deposition of these pesticides. The data suggests that agricultural runoff, carried by rivers, is a significant vector transporting OCPs into the lake. This process not only introduces contaminants into the water but also fosters the gradual accumulation of these toxic compounds in the sediments, posing long-term risks to aquatic life and potentially disrupting entire ecosystems. The historical usage patterns of these chemicals have left an indelible mark on susceptible ecosystems.

Identifying the source of pesticide pollution is crucial. The research team employed advanced source apportionment techniques which elucidated the relative contributions of various agricultural practices to the observed concentrations of OCPs. This multi-faceted approach not only aids in recognizing hotspots of contamination but also serves as a pivotal step for mitigation strategies. By understanding specific agricultural contributions, stakeholders can tailor interventions to target the most affected areas, thereby reducing the ongoing influx of these harmful substances into the lake.

Besides these pressing concerns, the study delves into the bioaccumulation of these legacy toxins within local fish species. The repercussions of OCP pollution are not merely environmental; they translate into significant health risks for both wildlife and humans relying on these water bodies for sustenance. Toxicological assessments indicated elevated concentrations of OCPs in fish samples, raising alarming flags about food safety for communities that depend on fishing for their livelihoods. This links environmental degradation with human health outcomes in an intricate web of cause and effect that demands urgent action.

The implications of these findings extend beyond regional boundaries as they underscore a global issue with the use and legacy of OCPs. Across the world, similar patterns of pollution have been discovered, prompting international discussions on stricter regulations and monitoring of agricultural practices. The research showcases a critical need for global cooperation in addressing one of the most uncomfortable legacies of chemical agriculture. The persistence of these compounds in the environment serves as a reminder of the lasting impacts of anthropogenic activities.

Furthermore, the researchers provide recommendations not only for policymakers but also for agricultural producers. Innovative practices such as integrated pest management (IPM) could provide a pathway to mitigate these unwanted pollutants while preserving agricultural productivity. IPM emphasizes the use of biological control and sustainable practices, showcasing a future where agriculture and environmental health can coalesce harmoniously, benefiting both the ecosystem and the economy.

The findings also reveal a gap in public awareness regarding the continued risks posed by these legacy chemicals. Public education campaigns are essential to inform communities about the dangers associated with pesticide exposure, especially in water sources. This awareness could help drive changes in consumer behavior and pressure industry and governments to prioritize safer agricultural practices.

In addition, the study’s methodologies and findings could serve as a template for future research in similar aquatic environments, proving valuable for environmental scientists aiming to understand the complexities of contaminant dynamics. The data gathered from this research provides a foundational understanding for subsequent investigations into pollution levels across different geographical landscapes.

The authors challenge readers to rethink our relationship with the environment and how agricultural practices are impacting freshwater systems globally. This research underscores not only the relevance of academic inquiry into environmental issues but also emphasizes an ethical responsibility towards future generations. With the ongoing threats posed by climate change and pollution, further research is pivotal in crafting solutions that protect both ecosystems and human health.

As we navigate this complex tapestry of environmental science and public health, the call to action is clear. It extends to scientists, policymakers, and communities alike to foster a collaborative approach towards mitigating the impacts of legacy organochlorine pesticides. The intricate dance of nature and human activity necessitates a conscientious and uproarious effort to harness sustainable practices that promote ecological integrity.

Ultimately, the study by Qiu et al. serves as a sobering reminder of the urgency with which we must approach environmental issues, especially those involving potentially hazardous substances that linger long after their use has ceased. As the world grapples with the consequences of its past, this research shines a light on paths forward that prioritize stewardship of our natural resources and the health of both communities and ecosystems.

In conclusion, while the findings present a daunting challenge, they also offer a rare opportunity for a collective re-evaluation of our approaches to agriculture, waste management, and environmental protection. Now is the time to take tangible action grounded in rigorous scientific research and community engagement, ensuring that future generations inherit a cleaner, safer planet.

Subject of Research: The impact of legacy organochlorine pesticides (OCPs) on semi-enclosed plateau lakes, focusing on their distribution, source apportionment, and bioaccumulation.

Article Title: Dominant riverine input of legacy organochlorine pesticides to a semi-enclosed plateau lake: distribution, source apportionment, and bioaccumulation.

Article References:

Qiu, X., Sun, L., Zhao, X. et al. Dominant riverine input of legacy organochlorine pesticides to a semi-enclosed plateau lake: distribution, source apportionment, and bioaccumulation.
Environ Monit Assess 197, 1353 (2025). https://doi.org/10.1007/s10661-025-14808-7

Image Credits: AI Generated

DOI: https://doi.org/10.1007/s10661-025-14808-7

Keywords: Legacy organochlorine pesticides, riverine input, bioaccumulation, freshwater ecosystems, environmental pollution, agricultural practices, source apportionment, community health, integrated pest management.

The Vaal River is emblematic of the challenges faced by many river systems globally, where industrial discharge, agricultural runoff, and urban waste converge. The presence of emerging pollutants—substances not traditionally monitored—poses a new level of risk that necessitates comprehensive studies to understand their behavior and effects. The researchers focused on a range of compounds, including pharmaceuticals, personal care products, and other industrial chemicals, known to disrupt aquatic systems and accumulate in the food chain.

In conducting their seasonal analysis, Mthiyane and colleagues meticulously sampled water from various sites along the Vaal River. Their rigorous sampling strategy ensured that they captured the temporal dynamics of pollutant concentrations across different seasons. Results indicated a stark variation in pollutant levels, influenced by factors such as rainfall, temperature variations, and human activities, particularly during peak agricultural seasons when runoff is most pronounced.

One significant finding of the study was the marked increase in pharmaceutical residues during the summer months, coinciding with elevated levels of agricultural runoff. This correlation underscores the interconnectedness of agricultural practices and the broader water quality issues facing the Vaal River. Furthermore, the researchers utilized advanced analytical techniques, including liquid chromatography coupled with mass spectrometry, to achieve high sensitivity and specificity in detecting these emerging pollutants, thereby providing a more accurate depiction of their presence.

Beyond merely documenting concentrations, the researchers carried out a comprehensive environmental risk assessment. This assessment factored in not only the concentration of pollutants but also their toxicity and ecological significance. By employing standardized risk assessment frameworks, they quantified the potential for harm to aquatic life and humans, revealing alarming implications for communities reliant on the river for drinking water and recreational activities.

The implications of this research extend beyond the borders of South Africa. As emerging pollutants are a global issue, the findings provide a valuable reference point for other regions grappling with similar challenges. Policymakers and environmental agencies are increasingly concerned about the presence of these contaminants, particularly given their potential to cause adverse health effects. The study serves as a call to action, highlighting the need for enhanced monitoring frameworks and improved regulatory policies worldwide.

The researchers also emphasized the role of public awareness in mitigating the risks associated with emerging pollutants. Engaging local communities in understanding the sources and impacts of pollution can foster more sustainable water use practices. Involving stakeholders in the dialogue surrounding water quality has the potential to amplify the effects of regulatory measures and enhance community resilience in the face of environmental degradation.

Another critical aspect of the study was its examination of the diverse sources of pollution contributing to the challenges faced by the Vaal River. A multifaceted look at industrial discharges, agricultural runoff, and urban wastewater provided a comprehensive understanding of how these pollutants enter the river system. This nuanced approach stresses the need for collaborative efforts between various sectors to develop effective strategies for pollution reduction and management.

Ultimately, Mthiyane and colleagues position their research as a crucial component of a larger narrative surrounding environmental health. Recognizing the connection between emerging pollutants, human health, and ecological integrity is vital for sustainable management practices. With the increasing recognition of climate change and its impacts on water resources, the urgency to address pollution in rivers has never been more pronounced.

The team asserts that robust data on emerging pollutants can guide decision-making processes in environmental policy. Their disciplined scientific inquiry equips policymakers with the necessary evidence to enact changes in regulations that govern wastewater treatment, agricultural practices, and industrial processes. By advocating for stronger environmental protections, their study promotes a sustainable future for the Vaal River and its surrounding communities.

As the world inches toward a new understanding of environmental risks, research like that conducted by Mthiyane et al. will be instrumental in shaping the responses to the pressing challenges posed by pollution. Establishing a foundation of scientific knowledge is critical to inform both the public and decision-makers about the urgency of addressing these emerging threats.

In conclusion, the seasonal analysis and environmental risk assessment of emerging pollutants in the Vaal River catchment area expound on the complex interplay of environmental factors. The implications for human health, aquatic ecosystems, and public policy are profound, urging immediate action on multiple fronts. Ongoing research and community engagement will be crucial in mitigating the impacts of these pollutants, paving the way for a healthier environment for future generations.

Subject of Research: Emerging pollutants in the Vaal River catchment area of South Africa.

Article Title: Seasonal analysis and environmental risk assessment of selected emerging pollutants in the Vaal River catchment area of South Africa.

Article References:

Mthiyane, Z.L., Martínez, J.G., Khulu, S. et al. Seasonal analysis and environmental risk assessment of selected emerging pollutants in the Vaal River catchment area of South Africa.
Environ Monit Assess 197, 1264 (2025). https://doi.org/10.1007/s10661-025-14649-4

Image Credits: AI Generated

DOI: 10.1007/s10661-025-14649-4

Keywords: Emerging pollutants, Vaal River, environmental risk assessment, seasonal analysis, water quality, public health.

Addressing this critical bottleneck, a team of researchers from Jiangnan University has pioneered an advanced electrocatalytic system that revolutionizes nitrate conversion by harnessing dual single-atomic catalytic sites embedded within double-shelled mesoporous carbon spheres. This novel catalyst architecture, coined FeNC@MgNC-DMCS, orchestrates a highly selective transformation of nitrate into harmless nitrogen gas (N₂), circumventing the undesirable formation of ammonia. Detailed investigations reveal that the spatially confined iron and magnesium atomic sites mediate distinct yet complementary functions within the catalytic framework, enabling unprecedented control over reaction pathways.

The inner shell of the double-shelled carbon spheres is densely decorated with iron-nitrogen (Fe–N₄) centers, which serve as active sites facilitating nitrogen-nitrogen bond formation. This molecular coupling step is pivotal for steering the reduction process towards nitrogen gas generation. Surrounding this core, the outer shell incorporates magnesium-nitrogen (Mg–N₄) sites, which introduce a unique proton modulation effect by creating a “proton fence.” This proton fence delicately balances the local proton concentration, restraining excessive hydrogenation tendencies that would otherwise lead to ammonia synthesis. This architectural innovation addresses a fundamental mechanistic challenge in nitrate electroreduction, achieving both high activity and superior selectivity within aqueous environments.

Experimental validation of FeNC@MgNC-DMCS underscores its remarkable nitrate removal capacity, achieving conversion rates of approximately 92.8% coupled with an exceptional nitrogen selectivity of 95.2%. Such performance metrics surpass those of conventional single-shelled or monometallic catalyst analogs, highlighting the synergy introduced by the dual-site configuration. In situ characterization techniques, including mass spectrometry and infrared spectroscopy, have delineated the reaction intermediates and pathways, confirming the predominance of nitrogen-nitrogen coupling over competing hydrogenation processes at the molecular level. This mechanistic insight elucidates how the dual atomic sites function in tandem to channel reaction dynamics toward the ecologically preferred nitrogen gas.

Beyond laboratory batch tests, the catalyst’s robustness was rigorously assessed under continuous operation within flow cell setups simulating real-world wastewater conditions. Long-term stability trials extending beyond 250 hours demonstrated sustained nitrate removal efficiencies exceeding 90%, with nitrogen selectivity maintained above 93%. These findings affirm the material’s durability and efficacy under dynamic operational parameters, an essential criterion for scaling electrocatalytic technologies in environmental remediation. Furthermore, elemental leaching analyses confirmed minimal release of iron and magnesium species, addressing potential environmental safety concerns and compliance with stringent World Health Organization standards for drinking water.

The design principles behind FeNC@MgNC-DMCS reflect a strategic convergence of materials science and catalysis. The sequential modular assembly combined with pyrolysis techniques enabled the precise fabrication of hierarchically structured carbon spheres, spatially decomposing functional sites to resolve conflicting catalytic demands. By harnessing single-atom site engineering, the researchers tuned electronic and chemical environments at the atomic scale, achieving unprecedented reaction selectivity that conventional heterogeneous catalysts cannot replicate. This breakthrough showcases how fundamental advances in nanoarchitectonics can unlock sustainable chemical transformations critical for addressing global environmental challenges.

Professor Hua Zou, co-corresponding author of the study, emphasizes the transformative implications of these findings: “Our approach, which introduces a magnesium-based proton fence enveloping iron catalytic centers, effectively curtails side reactions responsible for ammonia formation. This atomic-level control exemplifies a paradigm shift in electrocatalytic nitrate remediation, enabling practical solutions that are both highly effective and environmentally responsible.” Such insights resonate broadly across the field of electrocatalysis, inspiring new directions for catalyst design where controlling proton availability and intermediate binding is critical for reaction outcome modulation.

The broader impact of this research extends well beyond nitrate pollution mitigation. The innovative catalyst design offers a modular platform adaptable to other challenging multi-electron, multi-proton transfer reactions where selectivity reigns as a primary concern. Potential applications span from sustainable energy storage and conversion to chemical manufacturing processes requiring fine-tuned product distributions. The work illustrates the power of combining hierarchical carbon architectures with meticulously designed single-atom catalytic sites to reconcile competing reaction pathways, thus paving the way for advanced catalytic technologies aligned with circular economy principles.

As nitrate contamination continues to escalate in intensity and geographic scope due to expanding agricultural activities and urbanization, scalable and cost-effective solutions like FeNC@MgNC-DMCS are urgently needed. Its outstanding stability, selectivity, and environmental compatibility position this catalyst as a viable candidate for integration into existing water treatment infrastructures, particularly in regions grappling with severe nitrate pollution. Moreover, the research underscores the critical role of interdisciplinary approaches that combine catalysis, materials science, and environmental engineering to devise impactful solutions for global water sustainability challenges.

Published in the international multidisciplinary journal Eco-Environment & Health on July 23, 2025, this pioneering work not only contributes valuable knowledge to the scientific community but also provides a compelling blueprint for future endeavors aimed at harnessing electrocatalysis for environmental remediation. Backed by support from the National Natural Science Foundation of China, the study stands as a testament to how targeted fundamental research can translate into transformative environmental technologies that safeguard public health and ecosystem integrity.

In summary, the FeNC@MgNC-DMCS catalyst represents a significant advance in electrocatalytic nitrate denitrification, deftly balancing activity, selectivity, and durability through innovative atomic-scale engineering. This achievement marks a critical step toward realizing sustainable water purification methods that minimize environmental footprints while addressing urgent pollution concerns. As the global community strives for cleaner water resources and healthier ecosystems, technologies such as these are poised to play a central role in shaping resilient, adaptive environmental management strategies.

Subject of Research: Not applicable

Article Title: Selective electrocatalytic denitrification to N2 via dual single-atomic sites on double-shelled mesoporous carbon spheres

News Publication Date: 23-Jul-2025

Web References:
https://doi.org/10.1016/j.eehl.2025.100172

References:
10.1016/j.eehl.2025.100172

Image Credits: Eco-Environment & Health

Keywords: Research methods

The research emphasizes the multifaceted role that the Damodar River plays in the ecology and the well-being of the populations residing along its banks. As a crucial source of water for agriculture and domestic use, the river’s health directly impacts not only the environmental landscape but also the health of countless individuals relying on it for their daily needs. The study delineates a clear link between water quality and health indicators, providing a stark reminder of the risks associated with contaminated water sources.

Key measurements taken throughout the study reveal alarming levels of pollutants, including heavy metals and microbial contaminants. These findings are crucial as they demonstrate how pollution, stemming from agricultural runoff, industrial discharge, and urban waste, can drastically impair water quality. By systematically assessing the composition of both surface water and the hyporheic zone—a critical interface between surface water and groundwater—the researchers have identified that contaminants often exceed safe thresholds, putting local populations at greater risk.

The hyporheic zone’s significance cannot be overstated, as it serves as a natural filter that can either attenuate or exacerbate the impacts of surface pollutants. Understanding its dynamics is essential for developing effective strategies to mitigate water quality degradation. Hasanuzzaman and colleagues present compelling evidence that the interaction between surface water and groundwater can either dilute or concentrate pollutants, adding a layer of complexity to the management of water resources in this region.

One of the study’s illuminating aspects is its focus on health risks associated with the identified contamination. The researchers employed various health risk assessment models to examine how exposure to contaminated water affects local communities. Their findings indicate an elevated risk of gastrointestinal diseases and other health complications, particularly among vulnerable populations, such as children and the elderly. This alarming revelation underlines the urgent need for interventions and proactive health measures.

Moreover, the research emphasizes the vital role of community awareness and education in combating health risks related to water quality. By disseminating information about the pollutants present in the Damodar River and their potential impacts on health, local organizations can empower communities to make informed decisions regarding water use. This advocacy for public education is essential in fostering community engagement and generating grassroots support for environmental protection initiatives.

The implications of the study extend beyond local communities, as they resonate with broader environmental and public health paradigms. The findings serve as a wake-up call for policymakers and governmental bodies to prioritize water quality management in their agendas. With pollution concerns increasing globally, the Damodar River study can provide a framework for similar assessments in other regions grappling with water quality issues.

As the findings from this research circulate among scientists and policymakers, it becomes increasingly evident that the challenge of preserving water quality is multifaceted and requires an integrated approach. Coordinated efforts involving local governments, community organizations, and environmental scientists are vital to formulate comprehensive water management strategies capable of addressing both pollution control and public health protection.

Innovative solutions, such as constructing effective wastewater treatment facilities and promoting sustainable agricultural practices, must be prioritized to combat water quality deterioration. Moreover, enhancing monitoring systems for frequent assessment of water quality is critical in generating timely data that can inform both policy decisions and community actions. The deterrence of pollutants at the source is fundamental to restoring the Damodar River’s health.

Additionally, this research underscores the importance of continuous monitoring and evaluation of watershed health. Integrating citizen science into water quality assessment can enhance community engagement while also yielding essential data. By training local residents to participate in sampling and monitoring activities, there is a potential to foster ownership of local resources and strengthen communal efforts toward sustainable practices.

In closing, the Damodar River study represents a significant contribution to the literature on water quality and human health risk assessments. By shedding light on the intricate relationship between environmental health and public well-being, it paves the way for future research endeavors aimed at safeguarding vital water resources. Collective action is essential, and this study serves as a crucial call to arms for all stakeholders involved in water management.

As we move forward, the enduring lesson remains clear: the health of our water resources directly correlates with the health of our communities. It will take informed actions, collaborative efforts, and innovative solutions to ensure that rivers like the Damodar thrive for generations to come. The challenges are significant, but so too are the opportunities for positive change in addressing public health concerns fueled by environmental degradation.

Subject of Research: Water quality and human health risks in the Damodar River, Eastern India.

Article Title: Assessing the water quality and human health risks in surface and hyporheic zone: study from Damodar River, Eastern India.

Article References:

Hasanuzzaman, M., Midya, S. & Shit, P.K. Assessing the water quality and human health risks in surface and hyporheic zone: study from Damodar River, Eastern India.
Environ Monit Assess 197, 1045 (2025). https://doi.org/10.1007/s10661-025-14448-x

Image Credits: AI Generated

DOI: 10.1007/s10661-025-14448-x

Keywords: water quality, human health risks, Damodar River, environmental monitoring, hyporheic zone, pollution, heavy metals, microbial contaminants.