Chemical oxygen demand (COD) gives us a reliable parameter for judging the extent of pollution in water [4].Water bodies that contained high COD is undesirable for fisheries and agriculture. High BOD or COD in water
will increase pollution in water bodies. COD in uncontaminated water must be ≤20 mg/l, while the water body with
the COD >200 mg/l is contaminated. Industrial waste can usually reach 20,000 mg/l. GR No. 82/2001 (class II),
COD has to be ≤25 mg/l, so COD of the three observations reached the quality standard. However, at the station 2
sampling 2, COD was out of the quality standard.