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to Okhla barrage, is of "reasonably good quality" until the Wazirabad barrage in Delhi. Below this, the discharge of wastewater in Delhi through 15 drains between Wazirabad barrage and Okhla barrage renders the river severely polluted. Wazirabad barrage to Okhla Barrage, 22 km stretch of the Yamuna in Delhi, is less than 2% of the Yamuna's total length but accounts for nearly 80% of the total pollution in the river. Untreated wastewater and poor quality of water

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