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International Journal of Zoology and Applied Biosciences Research Article
Study on water quality parameters of Chalakudy river, Thrissur district, Kerala, with special reference to heavy metals
Aswathy S Nair, Shiny K J and Sojomon Mathew
Year : 2026 | Volume: 11 | Issue: 3 | Pages: 240-248
Received on: 12/03/2026
Revised on: 27/03/2026
Accepted on: 21/04/2026
Published on: 01/05/2026
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Aswathy S Nair, Shiny K J and Sojomon Mathew( 2026).
Study on water quality parameters of Chalakudy river, Thrissur district, Kerala, with special reference to heavy metals
. International Journal of Zoology and Applied Biosciences, 11( 3), 240-248.
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Abstract
River pollution presents a serious risk to human health, since the chemicals that are present in water have a detrimental impact on aquatic organisms, particularly fish, and have the potential to indirectly damage human health. The present work examined the levels of heavy metals in water samples taken from a variety of locations along the Chalakudy River. The findings of the investigation revealed that the water quality is largely exceptional, with the majority of heavy metal levels being below the permissible limits. Water samples studies at four sites Vettukadav Bridge (CS1), Pariyaram Meloor(CS2), Kombanpara Check Dam (CS3), and Kallur Thekkumuri Pulikkakadavu (CS4) were conducted on this fifth longest river in the state with multiple tributaries. A few km apart, these stations were affected by many local activities including proximity to a warehouse/paper mill(old), a brewery, and a gelatin plant. 12 surface water samples (three from each station) were gathered and examined for heavy metals using AAS. Water quality indicators showed very high TDS levels, which pointed to possible pollution, mineral dissolution, or runoff; temperature, turbidity changes probably affected by seasonal or human activity; low COD and BOD showing little organic pollution. Station CS4, showed the highest concentrations of lead, arsenic, cadmium and iron. Heavy metal analysis in water showed rising concentrations of several metals downstream.
Keywords
Chalakudy river, Pollution, Heavy metals, Human health, BOD.
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© The Author(s) 2025. This article is published by International Journal of Zoology and Applied Biosciences under the terms of the Creative Commons Attribution 4.0 International License (creativecommons.org), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
