Water Quality Rating of Kolkata Waterbodies

Kolkata’s wetlands not only provide breathing oxygen or keep the surrounding environment cool, but these wetlands also provide huge fish produce by which the fishing community sustains its livelihood by fish farming in the wetlands. But the serious polluting substances cause a decrease of water quality in Kolkata wetlands principally by human interference. Kolkata water bodies are polluted mainly by the inorganic and organic solid wastes, toxic chemicals, and organic compounds etc. which are generally found in the wastewater coming from the domestic discharges. The analytical results of the surface water samples collected from the different water bodies in and around Kolkata metropolis show the extreme deterioration of water quality of the waterbodies which are even unusable for outdoor bathing.