Varuna: A Python-Based System for Water Quality Index Calculation

Varuna, developed by Joyanta Debnath and Ananta Debnath, is a Python-based system for calculating water quality indices, including the Water Quality Index (WQI), Canadian Water Quality Index (CWQI), and National Sanitation Foundation (NSF) Water Quality Index. The system assesses water body health by integrating physical, chemical, and biological parameters, aiding researchers and professionals in identifying pollution issues and prioritizing sustainable management. Hosted on GitHub (https://github.com/JoyantaDeb/Varuna-Water-Quality-Index), Varuna offers a user- friendly interface, interactive Matplotlib visualizations, and customizable inputs for local conditions. As an open-source platform, it fosters global collaboration. This paper details Varuna’s development, calibration, coding implementation, and applications in sustainable water management, contributing to environmental protection.