[cactus2093]

I don’t know much about the city water system, is there a likely scenario where the water shuts off due to coronavirus?

It’s a much different situation than an earthquake, nothing is going to damage the water lines in this case. Does the water grid require a lot of active maintenance on a daily basis that it’s at risk of shutting off if there are a few weeks where nobody is working?

[thaumasiotes]

The lesson I would draw is less "they're recommending 7 days of water because they think there's a chance the water might shut off" and more "they issue the same recommendations without regard to what circumstances you're supposedly preparing for or whether those recommendations technically make any sense".