Beneath the ground, several conditions can slow or impede pool-construction. Examples include underground rock, extended tree roots, a high local water table (in which water from the earth seeps into an excavated hole), and buried utility lines that utility-reporting services did not identify.

While qualified pool contractors use strategies to overcome most of these subterranean hurdles, build-schedules often must be extended.

Learn more: Backyard Conditions that Impact Building Costs