The boiling point for pure water is 212 degrees Fahrenheit and the melting point is 32 degrees. Pressure and the purity of the water can have an impact on the melting and boiling point.
Saltwater and other non-volatile impurities have a higher boiling point and a lowered melting point. How much both points are impacted is dependent on the amount of salt that is contained within the water.
Increased pressure on boiling water results in a higher boiling point. Conversely, the melting point is lowered as a result. Pressure also has an impact on the point at which water freezes. Increased pressure lowers the freezing point.