Ontario, Calif. — The International Association of Plumbing and Mechanical Officials (IAPMO) has released hardcopy and digital versions of its 2018 editions of the Uniform Solar, Hydronics and Geothermal Code (USHGC) and Uniform Swimming Pool, Spa and Hot Tub Code (USPSHTC). Both the hardcopy and eBook (viewable on computers, tablets and smart phones) versions can Read more