COD: - The chemical oxygen demand is a measure of oxygen equivalent to the requirement of
oxidizing organic matter contents by a strong chemical agent. The COD test is helpful in
indicating toxic conditions and the presence of biologically resistant organic substances. The
maximum COD value was recorded 193 ppm at station 8 and the minimum values was recorded
as 69ppm at station 2. The high value of COD due to high level of pollutants present in water
samples.