WQI falls in the range of ‘‘Excellent’’ (0–24) during
both years and clearly revealed that the water could be used for drinking purposes after disinfection. Carlson (1977) classified the freshwater lakes based on trophic status index with range: 0–40 ‘‘Oligotrophic’’, 40–50 ‘‘Mesotrophic’’, 50–70
‘‘Eutrophic’’, and >70 ‘‘hyper-eutrophic’’