> It needs more qualifications IMO.

What it needs is for us to not make up extreme scenarios to excuse not handling the obvious ones, which are extensively covered in the sources I linked you to. Obviously “reasonable” is implied; “unreasonable” is, by definition, absurd. We can only do what’s within our means.

That’s the thought behind the “Could we please not?”. Who, exactly, are those the people in your scenarios in the proverbial middle of nowhere going to “demand” water from? That is obviously not the same thing as not caring for the infrastructure under your control or letting people knowingly be contaminated.