2021 International Swimming Pool and Spa Code

2021 International Swimming Pool and Spa Code The 2021 ISPSC® contains many important changes including: It was clarified that flotation tank systems for sensory deprivation therapy are not within the scope of the ISPSC. Hot water storage tanks are now required to be listed and labeled to a standard. New sections were introduced into the code to cover solar thermal water heating systems. Installation requirements refer to the IMC.