Jesus answers Nicodemus and says two things are required for man to be born again: Water and the spirit.
On the contrary, Campion, you are confusing the result with the cause.
There is only one thing Christ teaches to be necessary for men to be born again/from above and born of the Spirit and of water:
John 3:9 King James Version
9 Nicodemus answered and said unto him, How can these things be?
John 3:14 King James Version
14 And as Moses lifted up the serpent in the wilderness, even so must the Son of man be lifted up:
This is the how, and you are trying to make the result the how instead of what Scripture, and the Lord Himself teach.
Do you understand your error on that? Because this is going to be the one question you are going to have to answer before we go any further.
New Birth is the result (being born again/from above and being born of God, and being born of water and the Spirit).
Christ's Death, His being lifted up—is the cause.
So you are trying to teach salvation with the result, rather than the cause.
Understand?
Christians call this ceremony whereby man is born again in water and the spirit baptism.
I agree, there are many Christians who have embraced the equally false doctrine of Baptismal Regeneration.
That doesn't change the fact that the water in view is the washing of water by the Word.
The disciples were "clean" through the Words Christ spoke. Peter makes it clear that the baptism he speaks of is not the putting away of the filth of the flesh (bodily cleansing). He also makes it clear what the water is here:
1 Peter 1:23 King James Version
23 Being born again, not of corruptible seed, but of incorruptible, by the word of God, which liveth and abideth for ever.
Not by getting dunked or sprinkled. That is simply a testimony of salvation by the believer, just as John's baptism of repentance was a testimony that the ones being baptized by him had repented.
Not that could obtain repentance.
He refused to baptize those he knew had not repented.
The only salvific Baptism is the Baptism with the Holy Ghost. you can read where Scripture makes that clear in Acts 11:13-18.
God bless.