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COTABATO CITY, BARMM, Philippines — The Rio Grande de Mindanao, the country’s second-largest river system, needs a massive rehabilitation to stop its ecological decline due to worsening pollution, unchecked waste disposal, and human encroachment along its banks, a local legislator said.

In a privilege speech before the Cotabato City council on Monday, Councilor Anwar Malang stressed the need for urgent and collective action to rehabilitate the Rio Grande de Mindanao, which he described as among “the most polluted waterways in the Philippines today.”

“The river has long been part of our history, culture, and identity as Cotabateños. If we act now, we can still restore its health and preserve it for future generations,” Malang said.

He appealed to residents, civil society organizations, government agencies, and the private sector to unite behind efforts aimed at restoring the river’s ecological integrity and economic value.