The Cal Spas began over 30 years ago at a county fair. The Year 1978 and California Acrylic Industries was a Pomona, California-based pool builder searching for a way to exhibit a large variety of pool designs in a small space. To solve this dilemma, the company created smaller versions of its formed acrylic pools and put them on display for customers. The miniature pools sparked interest and the company began to receive special requests for acrylic hot tubs. A year later, the company stopped building pools and focused full-time on the hot tub business. Cal Spas was born.