These guys have a dealer in DeWitt, IA and according to a guy in the know they cannot keep up to the demand: pre-built pools you just drop into a hole.
Fiberglass Inground Swimming Pools - Latham Pool
Latham fiberglass pools utilize the highest grade materials to transform your yard into a paradise. Learn more about how a fiberglass pool can turn your backyard dreams into reality.
www.lathampool.com