Economy Chennai has a groundwater problem, but isn't Cape Town yet Updated : July 25, 2018 06:13 PM IST The recent Niti Aayog report on India’s water situation, picks Chennai as one of the city’s expected to run out of groundwater by 2020. Sources from the Chennai Metropolitan Water Supply estimate that the city draws anywhere between 200 and 300 MLD of ground water. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.