The report says «مَنْ يَشْرَبُ مِنْهَا فَلَا يَظْمَأُ أَبَدًا»—whoever drinks from it will never thirst again. This is a promise of divine provision in the Hereafter, not a statement about the finite effect of ordinary worldly water.
Approaching, actually drinking, and enjoying the promised consequence are distinguishable matters. Narrations also discuss people being turned away. We should not invent exhaustive lists of particular persons or outcomes beyond the evidence.