If water were to travel at the speed of light, it would violate the fundamental laws of physics as we currently understand them. According to Einstein's theory of relativity, the speed of light in a vacuum is the absolute maximum speed at which any form of matter or information can travel. In this theory, the speed of light is denoted by the symbol "c" and is approximately 299,792,458 meters per second.
When an object with mass approaches the speed of light, its energy increases significantly, and its mass also appears to increase. As an object with mass approaches the speed of light, its relativistic mass becomes infinitely large, requiring an infinite amount of energy to accelerate it further. This means that it would take an infinite amount of energy to accelerate water to the speed of light.
Furthermore, the behavior of matter at or near the speed of light is quite different from our everyday experience. Time dilation and length contraction effects occur, causing time to slow down and lengths to appear shorter in the direction of motion. These effects become more pronounced as an object approaches the speed of light.
Therefore, based on our current understanding of physics, it is impossible for water or any other object with mass to travel at the speed of light.