National Swimming Pool Foundation: Water Chemistry Guidelines
The table below presents target ranges for important water chemistry parameters. These guidelines were last updated for the 2014 edition of the NSPF® Pool & Spa Operator™ Handbook and are taught to students in CPO® (Certified Pool/Spa Operator) classes (generally commercial pool operators). For more information on CPO classes, go to www.nspf.org.
Recommended Guidelines For Water Quality