Updated October 2025. This booklet has been prepared by the Pool & Hot Tub Alliance (PHTA) to inform you about general safe use, operation, and maintenance of your inground pool. It represents the current knowledge of the industry, but is not intended to cover all aspects of pool design operations, installation, and maintenance. It will help you understand some of the causes of pool-related accidents and how to prevent them. It is your responsibility to be sure that you, your family, and guests use the pool sensibly.