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Open research questions in Water Quality and Pollution Assessment

88 unresolved questions extracted from the limitations and future-work sections of 860 Water Quality and Pollution Assessment papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • There is a lack of research on the water quality of the Xingu River, particularly in the context of the Belo Monte Hydroelectric Power Plant. The study aims to fill this gap by providing a comprehensive analysis of the limnological and microbiological parameters of the water.

    Spatial-Temporal Analysis of Water Quality in Municipalities Influenced by the Belo Monte Hydroelectric Plant · 2026 · DOI

  • Microbial contamination of receiving waters poses environmental and health risks to residents. The lack of proper treatment of abattoir waste before discharge into rivers and streams is a major challenge. The spread of waterborne diseases is a significant challenge in low-and middle-income settings.

    Bacteriological assessment of the impact of untreated abattoir effluents on the Okokpon Stream and Surrounding Groundwater, Edo State, Nigeria · 2026 · DOI

  • The lack of safe and regulated water sources for irrigation. The presence of heavy metals and microbial pathogens in irrigation water and vegetables. The need for effective strategies to reduce contamination and promote food safety.

    A Systematic Review of Irrigation Water Quality, Vegetable Contamination, and Food Safety Concerns in Peri-Urban Addis Ababa, Ethiopia · 2026 · DOI

  • The study faced challenges in analyzing the complex and dynamic system of the Rio Doce Basin. The sampling effort was limited by the remote location and accessibility of the sampling sites. The study had to account for the variability in water quality parameters and trace elements over time and space.

    A decade on: the tailings legacy in Rio Doce water quality · 2026 · DOI

  • Urbanization and industrialization are leading to increased pollution in rivers. Lack of adequate waste disposal and sewage treatment infrastructure is contributing to declining river health. Land use changes are affecting river water quality parameters such as BOD, fecal coliform levels, and nutrient levels.

    Land use and land cover change as a driver of river water quality degradation: a comparative review of global, Indian and Uttarakhand river systems · 2026 · DOI

  • Severe water scarcity and qualitative degradation in rural Iraq. High pesticide usage affecting water quality. Limited access to safe drinking water.

    Evaluation of drainage and well water for drinking and agricultural use in calcareous soils · 2026 · DOI

  • Insufficient sanitation and inadequate stormwater infrastructure in informal settlements. Ineffective environmental governance. Limited awareness about the dangers of degraded river systems among community members.

    Community perceptions and environmental exposure pathways shaping children's vulnerability to degraded urban streams in Umlazi Township, South Africa · 2026 · DOI

  • Extreme turbidity changes in raw water. Short-term risks and treatment constraints. The need for a combined assessment of WQI and exceedance analysis.

    An Integrated Evaluation of Drinking Water Quality and Environmental Planning Implications Using WQI and Exceedance Analysis: Al-Doura Water Treatment Plant, Baghdad · 2026 · DOI

  • The study faced challenges in collecting and analyzing water samples due to limited resources. The study faced challenges in interpreting the results due to the complexity of the data.

    COMPARATIVE ASSESSMENT OF BOREHOLE AND HAND-DUG WELL WATER QUALITY IN ITORI, SOUTHWESTERN NIGERIA USING WATER QUALITY AND HEAVY METAL POLLUTION INDICES · 2026 · DOI

  • Geogenic and anthropogenic activities can degrade groundwater quality. Climate change can impact groundwater quality. There is a need for effective groundwater management and protection strategies.

    Hydrogeochemical Assessment of Groundwater in Epe (Nigeria) for Drinking and Irrigation Purposes · 2026 · DOI

  • The number of monitoring records varies between the three islands, and Nanumea has more monitoring records than Nui and Vaitupu. Temporal coverage of the analyzed water data varies between water sources and parameters. The study does not use hydrological modeling or further experiments to establish causal relationships.

    From data to decisions? assessing community-based water monitoring in Tuvalu · 2026 · DOI

  • The availability and quality of groundwater in Tuvalu's outer islands remain poorly characterized and unevenly documented. There is a need for effective community-based water monitoring schemes to support local water management in remote and climate-vulnerable environments.

    From data to decisions? assessing community-based water monitoring in Tuvalu · 2026 · DOI

  • The need for regular monitoring of water quality in the Bozem. The importance of evaluating the water quality parameters against established standards.

    Analisis Kualitas Perairan Bozem FMIPA UNESA Berdasarkan Parameter Fisika Kimia · 2026 · DOI

  • Further studies on the health implications of wastewater reuse. Investigations into the effects of wastewater on soil quality and crop productivity.

    Assessment of Wastewater Quality for Irrigation and Its Environmental Implications: A Study of Physicochemical Properties and Heavy Metal Pollution in the Ngadda Channel, Maiduguri, Borno State, Nigeria · 2026 · DOI

  • Increased population and agricultural activities. Domestic and non-domestic waste disposal. Limited monitoring and evaluation of river water quality.

    Assessment of the Quality of the Saddang River as A Water Resource in North Toraja Regency Using Storet and Pollution Index · 2026 · DOI

  • The influx of organic matter from rainwater runoff and surrounding activities. The need for regular monitoring of water quality.

    Analisis Kualitas Perairan Bozem FMIPA UNESA Berdasarkan Parameter Fisika Kimia · 2026 · DOI

  • The need for continued monitoring of wastewater quality. The importance of assessing the risks associated with wastewater reuse for irrigation.

    Assessment of Wastewater Quality for Irrigation and Its Environmental Implications: A Study of Physicochemical Properties and Heavy Metal Pollution in the Ngadda Channel, Maiduguri, Borno State, Nigeria · 2026 · DOI

  • Further research is needed to investigate the sources of contamination and the effects of the Belo Monte Hydroelectric Power Plant on the water quality. The study's findings can inform future research on the water quality of the Xingu River and the development of strategies to improve it.

    Spatial-Temporal Analysis of Water Quality in Municipalities Influenced by the Belo Monte Hydroelectric Plant · 2026 · DOI

  • Because only three macrophyte sampling occasions were available, the correlation between diversity indices and water quality parameters (n = 3, 1 degree of freedom) could not be evaluated with meaningful statistical power and is presented descriptively rather than as a confirmed relationship.

    Seasonal Physico-Chemical Water Quality and Aquatic Macrophyte Diversity of Victoria Lake (Bada Talab) in Lohardaga, Jharkhand, India · 2026 · DOI

  • The paper identifies a gap in the understanding of water pollution, highlighting that it is not just a modern problem. The gap includes the lack of consideration of natural products as a source of pollution.

    The History and Definition of Water Pollution · 1983 · DOI

  • Future studies can apply the proposed approach to other reservoirs and water bodies. The use of other deep learning architectures and techniques can be explored. The study's results can be used to inform water management decisions.

    Integrating Entropy-based Water Quality Index and Deep Learning Forecasting for Uncertainty-aware Assessment · 2026 · DOI

  • There is a lack of comparative studies on physiochemical parameters and organic contamination in multiple creeks. Prior work has not extensively studied the physical and chemical characteristics of water and organic pollution in multiple creeks.

    Comparison and Evaluation of Physicochemical and Organic Indicators of Pollution in Selected Creeks of Mumbai Western Coastal Region · 2026 · DOI

  • The global water cycle is undergoing significant changes due to rapid land use and climate change. The issue of water security has been exacerbated by a decline in water quality. Effective water management needs to address the increasing impact of human activities on the water cycle.

    Long-term quantitative evaluation of river water quality in Tokyo (1966–2023) based on the NSFWQI · 2026 · DOI

  • Previous studies have focused on changes in the quantity of available water, but the issue of water security has been exacerbated by a decline in water quality. The study aims to address this gap by assessing the historical shifts in the Sumida River's water quality.

    Long-term quantitative evaluation of river water quality in Tokyo (1966–2023) based on the NSFWQI · 2026 · DOI

  • There is a need for systematic and integrative assessments of river water quality in the Niger Delta region. There is a lack of comprehensive analysis of the sources of pollution in the Okpare Olomu River.

    Insights into the quality index of surface water from the Okpare Olomu River, Southern Nigeria · 2026 · DOI

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88 open questions have been extracted from the limitations and future-work passages of 860 Water Quality and Pollution Assessment papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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