The city of Kanpur in the north Indian state Uttar Pradesh is known for its leather industry - supplying national and international demands for superior quality leather, generating annual revenue of billions of INR. But the leather making process involves use of toxic element like chromium, sulphur etc. Every day the tanneries produce thousands of liters of polluted water that go down the drains through the villages, and fields, and finally to the Ganges. The government run treatment plant is...
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