Thousands of dead fish wash ashore at Telangana lake, locals blame polluting industries.
"I have not even caught one today," he remarks, adding, "So many of them died, that it’s become tough to catch a live one."
"I wasn’t there when it happened, but I came to see today morning after I read about it.
"Because of this, we are not able to catch any fish today," he adds.
"Earlier, once in a few days, we used to see the smaller fish wash ashore.
This time, some of the biggest fishes in the lake have also died in the thousands.
Speaking to the media, Vice-President of the local Fishermen Cooperative Society, E Anjaiah, said, "Water pollution is the main reason for this.
The water quality of any lake, is measured by its Biochemical Oxygen Demand (BOD) level, which is the amount of dissolved oxygen available for oxygen consuming bacteria.
Last year, it was reported that the most polluted lake in the city, was the Pragathinagar Cheruvu, with a reported BOD level of 144 mgpl, while the BOD level for Noor Mohammed Kunta, was 105 mgpl.
The Edulabad lake, also known as the Laxminarayana cheruvu, is one of the most polluted lakes in the city, and spews toxic, white foam throughout the year.

Varanasi is less polluted than Lucknow despite having a much higher population density, according to latest studies. Varanasi scored favourably over Lucknow on parameters of air pollution, water pollution and municipal solid waste, the Comptroller and Auditor General of India has noted in its latest report (March 31, 2016). The report was tabled in the Uttar Pradesh Assembly on Thursday and factored in studies conducted between 2011 and 2015 by the Uttar Pradesh Pollution Control Board and the U.P. Jal Nigam. The audit report noticed that the water pollution in river Ganga near Varanasi and air pollution in Varanasi during the period 2011-2015 was less than that of the river Gomti in Lucknow. As per the 2011 Census, Varanasi has a population density of 2,395 persons per square km while the figure for Lucknow 1,816. Quality improves Further, while the water quality of the Ganga in Varanasi improved, that of the Gomti in Lucknow is deteriorating, the report…

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Photo: Evoqua.
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Water pollution is a serious problem for all the people & living species on earth.
Water is get polluted when the different harmful heavy metals like mercury, lead, cadmium etc.
& chemicals from industrial or sewage wastes which are put directly in the rivers or oceans dissolves the gases like methane, carbon dioxide etc.
in water which would decrease the BOD i.e. biological oxygen demand of different micro-organisms & aquatic fauna leading to their death due to less availability of oxygen for them for survival.
The different examples of water pollution are; dumping of sewage & industrial wastes in the fresh water of rivers or lakes or in oceans, washing of clothes in rivers & canals, contamination or water bodies by addition of nuclear or radioactive wastes etc.
The different types of water pollution are: Ground water pollution Underground water pollution Surface water pollution Microbial water pollution Chemical water pollution Nutrient water pollution The different causes of water pollution are: Dumping of industrial & sewage wastes into water bodies without treatment.
The direct dumping of untreated sewage wastes from the cities into the rivers or oceans will lead towards the pollution of these natural resources of water & depletes the aquatic ecosystems of these places.
Dumping of animal wastes in the water resources is also a main cause of water pollution.
This problem is created by the different processes such as oil splitting from ships or pipelines, adding of sewage & industrial wastes directly to the water units, acid rain, addition of cattle dung or wastes to the water resources of earth, deforestation or burning of forests, acidification of oceans etc.
Acidification of oceans & rivers: The addition of pollutant like carbon dioxide into water more than permissible limits would responsible for the acidification of ocean water which will result in depletion of oceanic ecosystems due to less availability of oxygen for survival to inhabitants of that aquatic ecosystem.