Dictionary of Biblical Words:
is Christ (Rev. 22), and is freely offered to “whosoever”. “Living water” is the Holy Ghost (John 8). “Water” by itself means the Word of God (1 Peter 2), it is also a type of death in baptism.
Strong’s Dictionary of Greek Words:
Meaning:
ὕδατος (hoo'-dat-os), etc. from the base of 5205; water (as if rainy) literally or figuratively