Water does not travel faster than light when sending information between two points on Earth. The speed at which information can be transmitted through water, or any other medium, is limited by the speed of light in that medium. In the case of water, the speed of light is slower compared to its speed in a vacuum, but still extremely fast.
In fiber optic cables, which are commonly used for high-speed data transmission, light signals are sent through thin strands of glass or plastic, and the speed of light in those materials is slower than in a vacuum. However, it is still much faster than the speed at which electrical signals can travel through copper wires, for example. This is why fiber optic cables are used for long-distance communication and high-speed internet connections.
When it comes to traveling from Earth to space or vice versa, the limitations on speed are due to the constraints of propulsion systems and the enormous distances involved. While the speed of light is incredibly fast, reaching even a fraction of that speed with our current technology is a significant challenge.