The National Swimming Pool Foundation (NSPF) is a nonprofit organization. Their interests are research, education and safety in aquatics. NSPF offers an extensive two-day training course provided by a certified instructor. Individuals who complete the course and pass the exam become registered as a Certified Pool/Spa Operator (CPO). The certification is valid for five years. The NSPF CPO program is recognized as the world-wide leader in training standards for the pool/spa industry.