The researchers studied the water quality of Kongba River in Manipur, India. They looked at various factors like temperature, solids, oxygen levels, and pollutants at different sites along the river. The water quality index ranged from 159.16 to 272.36, with site III having the worst quality and site II the best. The researchers found that pollution from major drains and human activities are causing the water quality of Kongba River to deteriorate.