Your experience brings up some good points. Out here in Brisbane right now the govt is telling new constructors that they should consider including a 5,000 liter reservoir tank for holding rainwater and recycled water. I've seen rural folks that pump wellwater into 10,000 gallon on site containment vessels just in case. I've also noticed how many big water tanks sit atop roofs of buildings in Manhattan.

Self reliance used to be the norm a while back in our country. Then we got urbanized and folks started relying too much on the promises of service providers and govt officials that their basic needs would be provided for and adequate planning was being done to prevent catastrophic loss of service to a community. Yep, reality is a big dog sometimes, come to bite you in the backside.

The next home I acquire will be built to my specs, with an independent water source, power source, long term storage for both, and well fortified. I will put up enough supplies that I can weather such events, and locate in a region which is not such a big risk for calamity, knowing that nothing is 100% immune. I will also maintain adequate and varied transportation capabilities so that if bugging out is necessary, I stand the best chance of doing so.

Not everyone has access to every option, so I guess you do what you can, learn from your experiences, and adjust your priorities accordingly.