Our certified pool operator certification is renewed every five years. It includes but is not limited to water chemistry and the Langlier Index, hydraulics, proper sanitation techniques, alkalinity and pH of pool water, emergency procedures, closing and re-opening of pools and much more. Any pool service technician servicing a commercial pool must be C.P.O. certified. If you want expert service at an affordable price – whether you are in Phoenix, Cave Creek, Carefree, Scottsdale, Glendale, Peoria, Mesa, Chandler, Gilbert, Tempe, or any of the nearby cities – it’s time you experienced the professionalism, integrity and ethics of Dan’s Pool Catering.