IST, the barometer index, the S&P BSE Sensex, gained 443.80 points or 0.58% to 76,618.96. The Nifty 50 index added 114.25 points or 0.63% to 23,189.50.
Growing urban populations, more public awareness of pollution and ambitious redevelopment plans propel big drinking water and wastewater treatment investment in two key cities.
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