|Published : 12 Apr 2017, 21:25:41 | Updated : 12 Apr 2017, 21:35:22|
Factories recklessly polluting Shitalakkha
Putting fishes, other aquatic species at great risk
A large number of unplanned factories and industries have been set up on the banks of the Shitalakkha River and they are continuously discharging industrial wastes into the river, putting aquatic animals at risk.
Big factories, including a fertiliser one, thermal power plant, textiles and dyeing, have been set up along the river from Ghorashal to Munshiganj through encroachment and those are polluting the river.
Reckless encroachment and contamination of the river water have forced its fish and other aquatic animals into disappearance.
Major portions of both banks of the 110-kilometre river, which flows through Narsigndi, Gazipur and Narayanganj districts and falls into Dhaleswari River in Munshiganj district, has been brought under industrialisation over the years.
According to the Department of Environment (DoE), dissolved oxygen (DO) level in water should be 6 parts per million (ppm) for survival of aquatic species, including fishes. But, the DO level is found about at 2 ppm in the Shitalakkha during monsoon and it drops to almost zero level in dry season.
Continued discharge of chemical waste from factories and release of oil from water vessels have made the river water extremely contaminated while fishes cannot survive in the highly polluted water.
Dead fishes are often found in the river and if water pollution continues, fish species will totally disappear from the Shitalakkha in near future.