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Emerging Chemical Pollutants in Aquatic Systems: Implications for Waterbird Health and Diversity in Indian Waterbodies
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This review pulls together existing research showing that only 28% of India's sewage is properly treated before entering rivers and wetlands, allowing drugs, detergent chemicals, pesticides, heavy metals, and microplastics to build up in the water. Waterbirds that eat fish and other aquatic life from these contaminated areas absorb these pollutants in concentrated amounts, leading to problems like thinning eggshells, weakened immune systems, and liver damage. Since these same waterways often supply drinking water and food (like fish) to nearby communities, the pollution threatening these birds is a warning sign of contamination that could also aff
Emerging chemical pollutants in Indian aquatic systems pose a growing and poorly regulated threat to waterbird populations. India generates approximately 72,368 million litres per day (MLD) of sewage, of which only 28% receives adequate treatment before discharge. Pharmaceuticals, personal care products, surfactant metabolites—including nonylphenol ethoxylates (NPE; detected at 0.8–22.3 µg/L) and linear alkylbenzene sulfonates (LAS; detected at 0.4–22.5 mg/L) in major Indian rivers —organochlorine and organophosphate pesticides, heavy metals, and microplastics are contaminating river basins, estuaries, and wetlands of national significance. Waterbirds occupy the apex of aquatic food webs and are consequently susceptible to bioaccumulation and biomagnification of lipophilic contaminants. Across resident and migratory species in India, chemical exposure has been associated with eggshell thinning, immunosuppression, hepatotoxicity, behavioural disruption, and population decline. Among 12 threatened or near-threatened waterbird species reviewed, all show documented or inferred chemical exposure risks at key Indian wetlands. This review covers pollutant sources, environmental distribution and fate, and ecotoxicological effects on waterbird health and diversity. It also compares Indian regulatory standards with those of the EU and USA, identifies monitoring gaps, and presents prioritized, actionable recommendations for policy and conservation.
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Jeopardy of Indian Waters: A Review
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This review covers the major threats to water quality in India, including microplastic pollution from plastic debris that weathers and enters rivers and coastal waters. Microplastics adsorb heavy metals and pathogens, causing mortality in fish and posing risks through the food chain to human consumers of seafood.
Microplastic Pollution in India's Marine and Inland Environmental Matrices: A Comprehensive Review
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This review pulls together existing research showing that tiny plastic fragments called microplastics are widespread in India's rivers, coastlines, and drinking water sources, and that fish and other seafood are absorbing them too. This matters because when we eat contaminated seafood or drink affected water, we may be ingesting these particles ourselves, though scientists are still working to fully understand the health effects. The review mainly highlights gaps in current research, signaling that more studies are needed to pin down exactly how risky this contamination is for people.
Microplastics in Indian Freshwater Systems: Current Status and Future Research Needs
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This review paper pulls together existing research on tiny plastic particles (microplastics) found in India's rivers and lakes, highlighting how widespread they've become in freshwater systems that many people rely on for drinking water and fishing. The authors point out that scientists still don't fully understand how much of these plastics end up in our food and water, or what health risks they might pose—meaning more research is urgently needed to answer these open questions. Since freshwater is a direct pathway for microplastics to enter our bodies, understanding this contamination matters for anyone drinking tap water or eating fish from affected areas.
Rivers under stress: a comprehensive review on pollutant sources, human and ecological impacts, analytical, statistical, and geospatial methods and restoration strategies, for evaluating river water quality in India
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This comprehensive review synthesizes evidence from 145 publications on river pollution across India, covering contamination sources, health impacts, and monitoring methods. Researchers found that untreated sewage is the largest contributor to river degradation, while emerging contaminants including microplastics contribute to bioaccumulation, antibiotic resistance, and health issues in communities living near affected waterways.
Microplastic pollution in rivers and lakes of India: Sources, ecotoxicological impacts, and removal strategies
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This review synthesizes current knowledge on microplastic pollution in India's rivers and lakes, covering sources, ecological impacts, and removal strategies. Researchers found that Indian freshwater systems are increasingly contaminated from industrial discharge, domestic waste, agricultural runoff, and tourism. Evidence indicates that exposed aquatic organisms experience bioaccumulation, oxidative stress, and behavioral changes, underscoring the need for comprehensive remediation efforts.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.