What typical measurements do chemical controllers in pools monitor?

Chemical controllers in pools primarily monitor pH and ORP (Oxidation-Reduction Potential) because these two parameters are crucial for assessing the water quality and ensuring safe swimming conditions.

pH indicates the acidity or alkalinity of the pool water, which affects the effectiveness of disinfectants, particularly chlorine. Maintaining the proper pH range (typically between 7.2 and 7.8) ensures that chlorine can work effectively to kill pathogens and prevent algae growth.

ORP measures the overall sanitizing effectiveness of the pool water. It reflects the water’s ability to oxidize contaminants, including bacteria and organic matter. A higher ORP value generally indicates better sanitation levels because it signifies that there is sufficient active chlorine (or other disinfectants) available to sanitize the water.

While other measurements like temperature and turbidity, alkalinity and hardness, and chlorine and phosphates are important for overall pool maintenance, they do not play the central role in immediate water safety and disinfection processes that pH and ORP do. Therefore, monitoring pH and ORP is critical for maintaining clean, safe, and enjoyable swimming conditions in aquatic facilities.