"... because there was much water there..."
Does it matter where we are baptized?
Baptism can take in a baptistry or lake, depending on the desires of candidate, convenience and health. The following quotation reveals Ellen White's strong preference for being baptized in a lake.
John 3:23 (NKJV) 23 Now John also was baptizing in Aenon near Salim, because there was much water there. And they came and were baptized.
Acts 8:36-37 (NKJV) 36 Now as they went down the road, they came to some water. And the eunuch said, “See, here is water. What hinders me from being baptized?” 37 Then Philip said, “If you believe with all your heart, you may.” And he answered and said, “I believe that Jesus Christ is the Son of God.”
"After the baptism three weeks ago, when seventeen went forward, the Baptists told our brethren they might have the use of the baptistry on certain days of the week at any time they asked for it. But when they asked on this occasion, the Baptists refused, saying we could not use it any more, for some of the members of their church were to be rebaptized. I was more glad than I can express, for if this refusal had not come, our brethren would not have found this beautiful lake, and it is worth while to make special efforts in finding a pure stream or a lake or to go the seaside, to the great fountain of waters, in order to celebrate the ordinance of baptism. I would go many miles to be baptized in an open stream, rather than receive the ordinance in a little box. I think I would wait for months before consenting to be baptized in a baptistry." {Lt23-1895.2}
Ellen White was baptized twice. The first time was in June of 1842, in Casco Bay (Portland, Maine), as she was joining the Methodist Church. She could have joined with sprinkling or immersion; she chose immersion.
James White mentions having rebaptized her: On receiving baptism at my hands, at an early period of her experience, as I raised her up out of the water, immediately she was in vision." {1BIO 121.5}
In our day almost all baptisms occur in a baptistry for the sake of convenience and health, but they can also take place in a lake or other body of water. The important point being that there is sufficient water for baptism by immersion.