For Pedu Lake, the first axis had high loadings of water temperature, pH and iron, while the second axis had high loadings of iron, sulfide and ammonia. However for Kenyir Lake, the water temperature, sulfide, ammonia and nitrite were observed to show high loadings on the first axis, but sulfide, nitrite and phosphate for the second axis. The measured water iron, ammonia and conductivity showed high loadings on the first axis, while temperature and dissolved oxygen on the second axis in Terengganu River.