Yes, water can be ice, water and steam all at once.
0.01°c and 611.73 pascals is what is called the triple point of water.
When you boil ice in outer space, where it is below the triple point, water will go through the processes of Sublimation, or just go from solid to gas.
Can water be in 4 states at once?
Of course! Put a cup of water on the Four Corners! 🙂