Assessment of Wastewater Quality Through Physicochemical Parameters and Its Environmental Impact

Abstract

Wastewater pollution has emerged as one of the most significant environmental challenges worldwide due to the rapid growth of urban populations, industrial development, and intensified agricultural practices. Large quantities of wastewater generated from domestic households, industries, and agricultural fields are often discharged into natural water bodies without adequate treatment. This contaminated water contains a variety of pollutants, including organic matter, nutrients, suspended particles, toxic chemicals, and heavy metals, which can significantly alter the physical and chemical characteristics of aquatic ecosystems. As a result, monitoring and evaluating wastewater quality has become an essential aspect of environmental protection and water resource management within the field of Environmental Chemistry.The assessment of wastewater quality is commonly carried out by analyzing a range of physicochemical parameters that provide valuable information about the level of contamination present in the water. Important parameters include pH, temperature, electrical conductivity (EC), biological oxygen demand (BOD), chemical oxygen demand (COD), total dissolved solids (TDS), total suspended solids (TSS), and dissolved oxygen (DO). Each of these indicators reflects different aspects of water quality and pollution levels. For instance, pH indicates the acidity or alkalinity of water, while electrical conductivity represents the concentration of dissolved ions. Similarly, BOD and COD are important indicators used to determine the amount of biodegradable and chemically oxidizable organic matter present in wastewater.Elevated concentrations of BOD and COD suggest a high presence of organic pollutants, which require large amounts of oxygen for decomposition by microorganisms. This process can significantly reduce dissolved oxygen levels in water bodies, creating unfavorable conditions for aquatic organisms such as fish, algae, and other microorganisms. Additionally, high levels of TDS and TSS can reduce water clarity, interfere with photosynthesis in aquatic plants, and contribute to sediment accumulation in rivers and lakes.Therefore, systematic evaluation of these physicochemical characteristics is essential for understanding the extent of wastewater contamination and its potential environmental consequences. Effective wastewater treatment technologies, regular monitoring programs, and strict environmental regulations are necessary to minimize pollution and protect both ecosystem health and human well-being