Does it allude to Christ?
Indeed, it does.
Jesus answered, "If you knew the gift of God and who is asking you for a drink, you would have asked Him, and He would have given you living water."
37On the last and greatest day of the festival, Jesus stood and said in a loud voice, “Let anyone who is thirsty come to me and drink. 38Whoever believes in me, as Scripture has said, rivers of living water will flow from within them.” 39By this he meant the Spirit, whom those who believed in him were later to receive. Up to that time the Spirit had not been given, since Jesus had not yet been glorified.
1 Corinthians 3:16
Do you not know that you are God’s temple and that God’s Spirit dwells in you?
What are the wells of salvation?
Ultimately, they point to the Holy Spirit who dwells in believers. The Spirit is a deposit guaranteeing our salvation.
Isaiah often prophecied about Jesus.
3 With joy you will draw water
from the wells of salvation.
4In that day you will say:
“Give praise to the Lord, proclaim his name;
make known among the nations [Gentiles] what he has done,
and proclaim that his name is exalted.
After Jesus' ascension, the disciples proclaim salvation in Jesus' name to the Gentiles.