How is the boiling point of water altered at pressure LESS than #1*atm#?
Well it is less than
The boiling point of a liquid is defined as the temperature at which the vapour pressure of the liquid is equal to the ambient pressure, and bubbles of vapour form directly in the liquid. The normal boiling point is specified when the ambient pressure is
This site gives the vapour pressure of water at various temperatures. So pick your pressure measurement, and read the temperature.