Yes, but any amout on water saving before it goes to ocean will help us. I am not seeing any less rain (observation) but definitely the ponds and lakes in villages and city like bangalure has come down to about 1/4th now
Chennai is a classic dead case. That city could have been maintained like London with water ways and road ways. Now they completely forgot about even tap water. Based on Thirukkural[1] if there was one thing that king/ruler should do that would be providing water to citizens free. It is very sad.
The old water ways built by British have turned into dumpyards over which poor people have built bridges of wooden planks and they live their. Mismanagement of resources at its finest.
"Indiscriminate dumping of toxic solid waste along the road, discharge of sewage, and construction of buildings, railway stations and a new road to connect Old Mahabhalipuram Road and Pallavaram have shrunk the wetland to a great extent."