Tom Griffiths, Ed.D., Aquatic Safety Expert
Several years ago, hotels began constructing indoor/outdoor pools with a connecting “swim-through” channel so that guests could swim from the indoor pool, through a channel into the outdoor pool. While this concept was unique, interesting, and attractive, it had several significant design flaws. Most important to this case, when built in the northern climates above the Mason-Dixon line, during the winter months the cold water in the outdoor pool would infiltrate and chill the water in the indoor pool through the channel. Because both pools were connected, and on the same circulation system, one pool could not be drained without draining the other.