Certified Pool Operator Handbook Practice Test

An acceptable pH reading for pool and spa water, as indicated in the Certified Pool-Spa Operator Handbook, ranges from 7.2 to 7.8. This range is critical for maintaining safe and effective water quality. A pH within this range helps to ensure that disinfectants such as chlorine are effective in killing harmful bacteria and algae, while also preventing skin and eye irritation for swimmers.

Maintaining the pH within these limits also contributes to overall water balance, preventing corrosion of equipment and plumbing as well as minimizing scale formation. If the pH falls below or rises above this range, it can lead to issues such as decreased efficiency of sanitizers, increased potential for irritation, and problems with water clarity. Therefore, having a pH in the range of 7.2 to 7.8 is essential for safe and enjoyable swimming environments.