Tnx people for all your suggestions and advice. It helped me isolate my perceived worst case emergency. This would be a flood, as in all other events I’ll be dead, or it will be very doable. So if there’s a flood, this would likely mean, no water, energy, electricity, communications and probably no help, for days minimum.

For clean water access, apparently a small portable (old school) waterfiltration system would be the best option, in combination with some bottled water.