You sound like you live in a apartment building or similar
I live in the middle of nowhere in northern Wisconsin I have to be dependent on myself and my family. No neighbors to check on us, no cellphones to call for help. We been living like this for 20 years now.
For emergency heat, I have two barrels bolted together to make a barrel stove. Sitting on the back porch. It will go in when crap fails.
For hot water I have pipes running though the heat exchanger part of the barrel stove. The pipes have quick connects
For water in case of power outages. I have hand pumps that pump water the old fashion way without electricity