Mumbai, the sprawling megacity that has become a symbol of India’s economic ambition, is once again in a state of paralysis, battling the unyielding force of a record-breaking monsoon. While the city’s flooded streets and overwhelmed infrastructure are a familiar sight each year, the focal point of the current crisis is the Mithi River. The once-thriving waterway, now a polluted urban drain, has swelled past its danger mark