How does Jesus describe himself as the living water in St. John's Gospel and in what ways does this teaching apply to us

When Jesus was going to Galilee, he passed through Samaria. In Samaria, he met a Samaritan woman at the Jacob’s well who came to fetch water. Jesus requested the woman to give him water to drink. The woman questioned why he (Jesus) a Jew, requested from her a Samaritan to give him water to drink. Jesus replied that if she knew the gift of God and who he was, that requested her to give him water to drink, she would have asked Him for a living water.
In her reply, the woman said to Jesus that he (Jesus) did not have any container to draw the water with and she also asked where Jesus got that living water from. She further queried Jesus whether he was greater than their father Jacob who gave them the well and drank from it. Jesus said, “Everyone who drinks of this water will thirst again, but whoever drinks of the water that I shall give him will never. The water I shall give him will become in him a spring of water welling up to eternal life”. The Samaritan woman then asked Jesus Christ to give her the living water, so that she would neither be thirsty nor come to draw water again.
The story of the living water is applicable to the present day Christians in the following ways:
(i) The living water is used by Jesus as a figurative expression. The “living water” means the word of God.
(ii) It signifies that, to Jesus Christ, there is no discrimination among the Jews, Greeks and Gentiles.
(iii) The living water, which comes out from Jesus Christ is enough to sustain us in all situations in which we may find ourselves.
(iv) The living water from Jesus will lead us to heaven.