Prelude ***** In the summer of 1985, just after my ICSE exams, I started working for my Nana’s (Mom’s Dad) transport business in Mumbai.  Someone has suggested to him that he accept the contract of supplying ‘potable water’ to ONGC rigs off Mumbai High and without much contemplation, he accepted. It was a disastrous business. ONGC was a tough client and the water came from BMC and private well ow…