Balanced nutrition is the basis of recovery after exercise or stress. Is water part of it? Yes, in a more general way though - it has a greater mission of methabolism support.
Water is not a source of energy and does not provide “bricks” for building cells. Water serves as an inert environment in which chemical and physical processes take place. Water helps to deliver nutrients and remove toxins, because each of us is a mini-laboratory.
The cleaner the water is, the fewer glitches in these subtle processes occur - the smoother they go.