Mayfield Garden: The real post-possession costs

Since possession of my 3BHK in Mayfield Garden, I'm truly frustrated. I work in real estate, but these RWA 'maintenance' charges and the constant water tanker dependency were never transparent. Builders don't tell you the real ongoing costs. Is anyone else in Mayfield Garden battling similar RWA demands or crazy water bills? What's your experience with the actual water supply here?