Another thing not mentioned was the baptismal pool that many churches have (ours does) inside the church house. Jesus was baptized in the Jordan River, and they used the Jordan River for baptizing a lot back then because there was much water there for that use. Having it inside, on second thought, since not mentioned specifically might just be . . . well, forbidden? illegal? . . . Nah.
The command is to be baptized in water. There is no command to be baptized in a specific body of water. Try again.