you will have to come back because we only do water baptism on the 1st sunday of the month.
The idea that a church "only does baptisms" on certain days, etc. is foreign to my experience. If someone desired to be baptized, and if someone was willing to do it, then it could be done at any time... whether it be when the church meets or at other times. The opportunity was usually extended for baptism at the end of every church service.
churches will have to set up a pool in front of the pulpit...
Is behind the pulpit okay?
I was kinda being sarcastic. On a true note though, the last church I was a member of only did water baptism every three months, after the schooling period for new members, then I got water baptized. but it was only a special thing at a certain time set up for the new members, during this time others could come forward and get dunked if they wanted to.
Ive noticed similar programs at other churches here as well, Ive attended many churches in my area. Ive never heard of a sunday water call.
Baptism's purpose and function in any given church's teachings is obviously going to drive how it is handled, how often it is done, etc. I've never heard the term "water call" either. Actually, in my particular church background, what you might refer to as the "altar call," we always referred to as the "invitation." Functionally, it's pretty much the same thing, I suppose, just different semantics (although, the use of the word "altar" always struck me as a bit odd).
But, since we see baptism as actually the means of conversion/becoming a Christian or a member of Christ's church/body, when someone comes forward and expresses the desire to follow Christ and to become recognized as a Christ-following Christian, the person is taken to be baptized right then and there. So, immediately upon taking the person's confession of faith, he or she is taken back and prepared for baptism. We do this because we understand it to be the Biblical way. In the New Testament, whenever someone believed the Gospel and accepted Jesus, they were baptized immediately. And, at that point, they begin their Christian lives.