Water situation in Bangalore - what do I need to know?

Can someone explain the whole water situation in Bangalore? I keep hearing about water shortages, tankers, borewell drama. Coming from a place where water was never an issue, this is confusing! What should I know? Do I need to install filters? Is tap water safe? How do apartments usually manage this? Any survival tips appreciated! Also what's up with the power cuts? 💧⚡