What effect do Trichlor Tables have on the pH level of a swimming pool?

Trichlor tablets, which are commonly used as a form of chlorine sanitizer in swimming pools, contain cyanuric acid. When these tablets dissolve in water, they not only release chlorine, which is the primary disinfectant, but they also introduce an acidic component into the pool water. This addition of acid has the effect of lowering the pH level of the water.

Maintaining proper pH levels is crucial for several reasons: it ensures the effectiveness of chlorine as a disinfectant, helps prevent corrosion of pool equipment, and contributes to swimmer comfort. If the pH level falls too low, it can lead to skin and eye irritation for swimmers and can also lead to increased wear on pool surfaces and equipment.

In contrast, other options would suggest that Trichlor tablets either increase the pH, have no effect on it, or help in balancing it, which does not align with the chemical properties of Trichlor tablets and their impact on pool water. Thus, it is accurate to state that the use of Trichlor tablets results in a decrease in the pH of the swimming pool water.