Water quality refers to the chemical, physical, biological, and radiological characteristics of water. It is a measure of the condition of water relative to the requirements of one or more biotic species and or to any human need or purpose.
Water quality assessment and management is one of the most important aspects of water management. This has attained significant global importance over the years in view of growing concerns and awareness on environment and health related impacts.
Study sites affected by effluent from the closed mine had epilithic diatom communities that were dominated by acidobiontic diatoms, such as Eunotia exigua and Achnanthidium minutissimum. The water quality of these sites had DAlpo values of 45.9-70.8, indicating β-mesosaprobic to α-oligosaprobic environments, whereas TDI ranged between 1.7-66.9, indicating an oligotrophic to mesotrophic environment.