Water Baptism is a public confession that you are a believer of Jesus Christ. It is an act of dying to the hold of sin in your life and choosing to live a new life in Christ. 
"We were therefore buried with him through baptism into death in order that, just as Christ was raised from the dead through the glory of the Father, we too may live a new life." Romans 6:4

Water Baptism is also an act of obedience to follow Christ's example. Jesus himself was baptized.
"And it came to pass in those days, that Jesus came from Nazareth in Galilee and was baptized of John in Jordan. ” Mark 1:9

Water Baptism is the next step after salvation and repentance, and is an important foundation of a Christian's life.
“Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins.” Acts 2:38

Jesus Christ was baptized by immersion in water. The word “baptize” comes from the Greek word baptizo which means “to immerse or dip under water."

The early church in Acts also baptized new believers by immersion in water.
“…then both Philip and the eunuch went down into the water and Philip baptized Him. When they came up out of the water…” Acts 8:38-39

Everyone who believes in Jesus Christ as their Lord and Savior and has made the decision to live for Him should be baptized. The only requirement before you are water baptized is that you believe in Christ.
“But when they believed Philip preaching the things concerning the kingdom of God and the name of Jesus Christ, they were baptized, both men and women.” Acts 8:12