Green Plumbing

Answer: B -- While the cost of various tank options is certainly important, and may be driven by the other considerations, it is not a site consideration itself. The amount of space available will help to determine whether to install an above- or below-ground tank, if feasible. The proximity of the tank space to the catchment area affects the feasibility of rainwater transport and ability to secure the tank to prevent tip-overs. The soil makeup helps to determine whether or not tank overflow needs to be rerouted due to drainage issues.