The Certified Pool Operator® certification program is a nationally recognized course which teaches advanced techniques in safety, water chemistry, maintenance and management. This course is recognized as the standard in the industry. The CPO® seal of approval is assurance to pool and spa owners, from motels to Olympic-sized municipal and college pools, that their facilities and their swimmers are under the supervision of trained certified professionals. Those who complete the program and open-book and open-note examination receive certification and a registration number which is valid for five years in all 50 states.