Causes for the pollution of lakes in Bengaluru

World celebrates Wetland Day on the 2nd of February. But Bengaluru, the famed garden-city of the country doesn’t have a lot to celebrate. 

Previously the city was dotted with exceptional lakes and valuable wetlands with massive heritage value, but the numbers have decreased almost alarmingly. The rapid rate of urbanization followed by the irresponsible discharge of effluents is the major reason behind the Bengaluru lake pollution. It eventually kills off the existing fauna and flora of these productive water bodies. 

There are few local communities that are dependent on these lakes for irrigation and drinking. These activities are being negatively impacted courtesy of lake pollution.  

Based on a detailed study report, out of the 105 lakes that were surveyed, only four were deemed fit for usage, whereas almost 25 lakes were inferred to be in the worst possible condition.

What Causes Lake Pollution?

90 % of the lakes are affected by sewage accumulation. The buildup of water hyacinth is also a major reason for water pollution as it is an indicative metric showing sewage flow and overall accumulation. 

Only the Mylasandra Lake was deemed fit for consumption. The major pollutants include the sewage and festive remains that are being fed by specific industries and irresponsible citizens due to untamed urbanization. 

With companies increasingly dumping debris and solid wastes into the wetlands, the condition is fast deteriorating and causing a massive number of fish deaths in the regions near Sankey, Jakkur, and Lalbagh.

How to Deal with the Issue?

What Bengaluru needs is a step-pronged approach that aims at controlling wetland pollution. 

  • The process should start with proper biodiversity documentation and an integrated approach followed by the introduction of effective judicial structures for faster conflict disposals. 
  • From an aesthetic and constructional point of view, the lakes need to be made free of encroachments. Proper fencing should be rendered to these wetlands, followed by boundary demarcation and mapping. 
  • The authorities must be vigilant when it comes to the valuation of these water bodies. Sewage treatment is essential, and individuals must be trained extensively regarding rainwater harvesting.

Now that we know the causes and mitigation plans, citizens and the government must work in unison towards improving the quality of the lakes in the city.

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