A Study on Physico-Chemical Parameters and Water Quality Index (WQI) of Varuna Lake, Mysore, Karnataka, India

Abhilash, H. R. (2022) A Study on Physico-Chemical Parameters and Water Quality Index (WQI) of Varuna Lake, Mysore, Karnataka, India. Indian Journal of Natural Sciences, 12 (70). ISSN 0976 – 0997

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Water is the most vital and necessary item for all life forms. The quality of freshwater resources is greatly impacted by anthropogenic activities especially those in the urban vicinities, which are frequently utilized as dumping stations for urban sewage. The Varuna Lake is located on the outskirts of Mysore city and is undergoing rapid transformation as several residential projects are springing up in the vicinity. This study aims to determine the physico-chemical quality of Varuna Lake water. The study period was divided into three seasons: post-monsoon (October-January), pre-monsoon (February-May) and monsoon (June-September) seasons. Surface water samples from three locations were collected and various water quality parameters were analyzed following standard methods. The mean values of all parameters were compared with drinking water quality standard given by BIS and ICMR. The data was statistically treated using one way ANOVA to find out seasonal variation in different water quality parameters. Pearson correlation analysis was performed to analyze relationship between water quality variables. There was a significant seasonal variation in some of the physico-chemical parameters as revealed by high values of pH, conductivity, turbidity, chemical oxygen demand and biological oxygen demand during pre-monsoon season.From the correlation analysis conductivity was found to have a positive relationship with water temperature and total dissolved solids. Most of the water quality parameters had a substantial negative correlation with pH. The overall WQI index was 80.27, which indicates poor water quality. The lake water was found to be more polluted than previous studies on the same lake.

Item Type: Article
Uncontrolled Keywords: Varuna Lake, seasonal variation, water quality, water quality index (WQI).
Subjects: B Life Science > Zoology
Divisions: Yuvaraj college
Depositing User: C Swapna Library Assistant
Date Deposited: 01 Jul 2023 10:52
Last Modified: 01 Jul 2023 10:52
URI: http://eprints.uni-mysore.ac.in/id/eprint/17566

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