Hussainsagar suffered a condition called hypoxia on September 29! Sources said that analysis of samples drawn from the lake by the State Pollution Control Board to study the effect of immersing Ganesh idols in the lake on September 29 revealed that the dissolved oxygen (DO) count (the amount of oxygen dissolved in a water body) was less than 1 mg/litre.

It should ideally be more than 10mg/litre to sustain marine life, but the Hussainsagar has always had much less, around 4 mg/litre.