São Paulo sanitation project secures $1.5 billion via multilateral-private blue bond structure

A $1.5 billion financing model for São Paulo's sanitation universalization successfully leveraged a $150 million BID Invest loan to attract $1.35 billion in private capital through blue bonds. This 1:9 leverage ratio represents the largest global operation of its kind, demonstrating a scalable mechanism for funding large-scale public utility infrastructure.