Water ponds, even though quite shallow, can be dangerous for young children. In this situation, a tub garden may be a better alternative. Before beginning installation of the garden, check local zoning ordinances for any regulations. In many cases, pools deeper than 18 inches will require a fence or wall. Pool installation can be done yourself or by landscape contractors.
Prefabricated pools are available in a wide variety of shapes and sizes.
Many are made of rigid fiberglass and are very durable. Discoloration occurs when exposed to air and sunlight, but life of material is not shortened. Less expensive and less durable pools constructed of bonded resin and semirigid or ABS plastic are also available. However, well filled pools should last a minimum of ten years. Pool depth varies with size.