Authors : Supriya Tiwari; Dr. Anand Sharma

Volume/Issue : Volume 10 - 2025, Issue 12 - December

Google Scholar : https://tinyurl.com/55wuse6r

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DOI : https://doi.org/10.38124/ijisrt/25dec003

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Abstract : The seasonal assessment of organic pollution was conducted using Dissolved Oxygen (DO), Chemical Oxygen Demand (COD), and Biological Oxygen Demand (BOD) in surface and subsurface water samples collected from 24 villages during Kharif and Rabi seasons (2022–2023). The results show noticeable seasonal variation influenced by agricultural activities, rainfall patterns, and hydrological conditions. DO levels ranged from 6.4–6.9 mg/L in Kharif and increased to 6.9– 7.3 mg/L in Rabi, indicating better oxygenation during post-monsoon conditions. In contrast, COD values were higher in Rabi (13.2–16.0 mg/L) compared to Kharif (11.8–14.8 mg/L), suggesting increased chemical oxidation due to the accumulation of organic and inorganic residues. BOD levels also showed higher concentrations in Rabi (3.2–4.1 mg/L) than in Kharif (2.8–3.5 mg/L), reflecting intensified microbial activity and organic matter degradation. Overall, the integrated DO–BOD–COD assessment reveals moderate organic pollution across the villages, with Rabi season showing comparatively higher organic load. This study highlights the need for regular monitoring and improved management strategies to prevent organic pollution in rural water sources.

Keywords : Dissolved Oxygen (DO), Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Organic Pollution, Seasonal Variation, Water Quality Assessment, Rural Water Sources, Budni Tehsil.

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