Bengaluru, India — Climate change is battering Asia’s water and power systems and putting millions in harm’s way, forcing countries to pour billions into shoring up basic services, according to two recent reports.

Water-related disasters are rising across the region even as spending to protect communities falls short. Asian nations will need $4 trillion for water and sanitation between 2025 and 2040 — about $250 billion a year, the Asian Development Bank said in a report released Monday.

Governments are under growing pressure to protect power systems people rely on every day. By 2050, extreme weather could leave listed power companies in Asia-Pacific with about $8.4 billion a year in damage and lost revenue, a third higher than now, according to recent research by the Hong Kong-based no

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